Publications

August 2019 (Revised February 2020)
Teaching Note

Sidewalk Labs: Privacy in a City Built from the Internet Up

By: Leslie John and Mitch Weiss

Email mking@hbs.edu for a courtesy copy.

The case serves as a microcosm of issues of digital privacy: the availability of data – personal data in particular – has tremendous potential to improve people’s lives... View Details

Keywords: Privacy; Privacy By Design; Privacy Regulation; Platforms; Data; Data Security; Behavioral Science; Analytics and Data Science; Safety; Entrepreneurship; Business and Government Relations; Consumer Behavior; Digital Platforms

2019
Article

Ridesharing with Driver Location Preferences

By: Duncan Rheingans-Yoo, Scott Duke Kominers, Hongyao Ma and David C. Parkes

We study revenue-optimal pricing and driver compensation in ridesharing platforms when drivers have heterogeneous preferences over locations. If a platform ignores drivers' location preferences, it may make inefficient trip dispatches; moreover, drivers may strategize... View Details

Keywords: Ridesharing; Pricing; Compensation and Benefits; Geographic Location; Market Design; Mathematical Methods

June 2019
Case

ClearLife: From Prospect to Platform

By: Alexander Braun, Lauren Cohen, Mauro Elvedi and Jiahua Xu

ClearLife’s first product was a trading and analytics platform for participants in the U.S. life settlement market, the secondary market for life insurance. ClearLife played a key role in facilitating transactions and devising a common language for expressing value and... View Details

Keywords: Digital Platforms; Insurance; Entrepreneurship; Expansion; Diversification; Strategy

June 21, 2019
Article

When Tech Companies Compete on Their Own Platforms

By: Feng Zhu

One common complaint from third parties about platform businesses is that they see what succeeds on their platforms and then enter the most profitable areas themselves, often decimating third parties in the process. Studies have identified several motivations for... View Details

Keywords: Platform-based Markets; Platform-owner Entry; Digital Platforms; Market Entry and Exit; Competition

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May 2019 (Revised March 2022)
Module Note

Nascent Platform Strategy: Overcoming the Chicken-or-Egg Problem

By: Andy Wu, David R. Clough and Sasha Kaletsky

This note provides a framework for addressing the classic chicken-or-egg dilemma facing entrepreneurs launching nascent multi-sided platforms. There are several conditions that lead to a difficult chicken-or-egg problem: strong network effects, high multi-homing costs,... View Details

Keywords: Multi-Sided Platforms; Strategy; Entrepreneurship; Market Entry and Exit; Problems and Challenges; Competitive Advantage

April 2019
Case

Afterpay U.S.: The Omnichannel Dilemma

By: Antonio Moreno, Donald Ngwe and George Gonzalez

In 2018, Nick Molnar, the founder of the Australia-based online payment service Afterpay began its expansion to the U.S. market. The service had gained a loyal following in Australia by enabling customers to pay for online purchases through four interest-free... View Details

Article

Platform Competition: Betfair and the U.K. Market for Sports Betting

By: Ramon Casadesus-Masanell and Neil Campbell

We examine two episodes of strategic interaction in the U.K. betting industry: (i) Betfair (an entrant multi-sided platform or MSP) vs. Flutter (also an MSP) and (ii) Betfair vs. traditional bookmakers. We find that although Betfair was an underfunded second mover in... View Details

Keywords: Platform Design; Betting; Complements; Competing Business Models; Co-opetition; Entry; Multi-Sided Platforms; Design; Network Effects; Business Model; Competition; Cooperation

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April 2019 (Revised August 2020)
Case

Raksul

By: Scott Duke Kominers, Masahiro Kotosaka, Nobuo Sato and Akiko Kanno

Raksul, 2018 Forbes Japan "Startup of the Year," ran an e-commerce platform drawing upon thousands of individual suppliers. Launched as a business-to-business printing services marketplace, Raksul had recently expanded to operate both a logistics/delivery marketplace... View Details

Keywords: Marketplace Design; B2B; Platform Strategy; Printing; Entrepreneurship; Digital Platforms; Logistics; Advertising; Growth and Development Strategy; Industry Structures; E-commerce; Web Services Industry; Japan

March 2019
Case

HOPI: Turkey's Shopping Companion

By: Sunil Gupta, Donald Ngwe and Gamze Yucaoglu

The case opens in 2017 as Onur Erbay, CEO of HOPI, a multi-vendor loyalty platform, is contemplating a critical decision. The case chronicles the origins of Boyner Group, the parent company of HOPI and a major retailer in Turkey, and development of retail and customer... View Details

Keywords: Loyalty Programs; Multi-vendor Platform; Retail; Big Data; Customer Relationship Management; Mobile and Wireless Technology; Business Model; Analytics and Data Science; Competitive Strategy; Decision Making; Applications and Software; Digital Platforms; Technology Industry; Retail Industry; Turkey

February 2019
Case

Halliday's OASIS

By: Scott Duke Kominers and Nicole Tempest Keller

Wade Watts has won control of the OASIS – a futuristic, immersive virtual reality game world. He must decide on rules, rights, and marketplace design, balancing the founding principles of the OASIS with the platform’s potentially negative externalities. View Details

Keywords: Managing Markets; Corporate Responsibility; Virtual Reality; Digital Platforms; Management; Corporate Social Responsibility and Impact; Social Media; United States

Article

Why Am I Seeing This Ad? The Effect of Ad Transparency on Ad Effectiveness

By: Tami Kim, Kate Barasz and Leslie K. John

Given the increasingly specific ways marketers can target ads, many consumers and regulators are demanding ad transparency: disclosure of how consumers’ personal information was used to generate ads. We investigate how and why ad transparency impacts ad effectiveness.... View Details

Keywords: Digital Marketing; Customization and Personalization; Information; Trust; Performance Effectiveness

January 2019 (Revised March 2021)
Case

SoundCloud: Subscription Streaming?

By: Ashish Nanda, Eric Van den Steen, Andy Wu, Jeffrey Boyar and Bonnie Bennett Slater

Established in 2007, SoundCloud already boasted the second largest number of active music listeners among all streaming services and was recognized as the go-to platform for new artists by early 2014. Yet, its founders were questioning the robustness of the firm’s... View Details

January 2019 (Revised October 2019)
Case

Rural Taobao: Alibaba's Expansion into Rural E-Commerce

By: Tarun Khanna, Ryan Allen, Adam Frost and Wesley Koo

Alibaba's Rural Taobao initiative had been launched in 2014 as a public service initiative to increase e-commerce adoption in China’s remote rural areas. In the first two iterations of the initiative, dubbed “1.0” and “2.0,” Alibaba had partnered with local businesses... View Details

Keywords: Strategy; Business Growth; Ecommerce; Corporate Social Responsibility; Business And Government; Emerging Market; Digital Platforms; Internet and the Web; Emerging Markets; Rural Scope; Growth and Development Strategy; Competitive Strategy; Corporate Social Responsibility and Impact; Business and Government Relations; Decision Making; E-commerce; China

Article

Friends or Foes? Examining Platform Owners' Entry into Complementors' Spaces

By: Feng Zhu

As platform owners continue to expand their ecosystems, many of them have started to provide consumers with their own complementary applications. These moves position the platform owners as direct competitors to their complementors. This paper surveys empirical studies... View Details

Keywords: Platform; Complementors; Digital Platforms; Market Entry and Exit; Competition

January–February 2019
Article

Why Some Platforms Thrive and Others Don't

By: Feng Zhu and Marco Iansiti

In the digital economy, scale is no guarantee of continued success. After all, the same factors that help an online platform expand quickly—such as the low cost of adding new customers—work for challengers too. What, then, allows platforms to fight off rivals and grow... View Details

Keywords: Digital Platforms; Competition; Network Effects; Competitive Strategy

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December 2018 (Revised February 2020)
Case

Fishbowl: Scaling Up

By: Leslie K. John

Fishbowl is a social media app that allows professionals to connect with other relevant professionals both within their company and across industry. Unlike many other social media apps, on which users typically present idealized portraits of themselves, on Fishbowl,... View Details

December 2018
Case

Choosy

By: Jeffrey J. Bussgang and Julia Kelley

Founded in 2017, Choosy is a data-driven fashion startup that uses algorithms to identify styles trending on social media. After manufacturing similar items using a China-based supply chain, Choosy sells them to consumers through its website and social media pages.... View Details

2018
Working Paper

Platform Competition: Betfair and the U.K. Market for Sports Betting

By: Ramon Casadesus-Masanell and Neil Campbell

We examine two episodes of strategic interaction in the U.K. betting industry: (i) Betfair (an entrant multi-sided platform or MSP) vs. Flutter (also an MSP), and (ii) Betfair vs. traditional bookmakers. We find that although Betfair was an underfunded second mover in... View Details

Keywords: Platform Design; Betting; Digital Platforms; Design; Network Effects; Business Model; Competition; Cooperation; Market Entry and Exit

SSRN

November 2018 (Revised February 2019)
Teaching Plan

Gimlet Media: A Podcasting Startup

By: John Deighton and Leora Kornfeld

When digital distribution becomes an option for an analog industry, the effects on the incumbents can be devastating. Is podcasting the beginning of the end of radio? Can it do what streaming video did to television and websites did to print? Two former public radio... View Details

Keywords: Platforms And Ecosystems; Startup; Creative Industries; Digital Marketing; Podcasting; Business Startups; Media; Entertainment; Growth and Development Strategy; Digital Platforms; United States