An Introduction to Whinston’s Tying, Foreclosure, and Exclusion by M.D. Whinston
Eliana Garces, Dec 20, 2012
After its publication in 1990, Michael Whinston’s article on Tying, Foreclosure, and Exclusion, quickly achieved fame for being the first formal mathematical demonstration that the practice of tying two separate products in a sale had the potential to foreclose competition and could therefore be used for such a purpose. The paper demonstrated that it was possible, under certain conditions, to use the monopoly power in one market to foreclose competitors in another market, as long as that other market had fixed costs to entry and was not perfectly competitive. Whinston’s paper quickly became the reference paper for those who instinctively believed that the commercial tying of two products in different markets could have a harmful effect on consumers. Because this presumption was under heavy assault at the time when the article was published, its results and the arguments it laid out were greeted with particular enthusiasm by some and, in all cases, with a lot of interest.
Featured News
Toast Faces FTC Lawsuit Over Alleged Hidden Fees and Subscription Practices
Oct 29, 2026 by
CPI
Amazon, Uber and Instacart Challenge NYC Delivery Worker Protections in Federal Court
Oct 29, 2026 by
CPI
Wall Street Law Giant Weil Gotshal to Dissolve After Partner Exodus
Oct 29, 2026 by
CPI
DoorDash to Acquire Instacart in $17 Billion Grocery Delivery Deal
Oct 29, 2026 by
CPI
Anthropic Urges California to Give Courts Power to Block High-Risk AI Models
Oct 29, 2026 by
CPI
Antitrust Mix by CPI
Antitrust Chronicle® – Exclusive Dealing
Oct 25, 2026 by
CPI
Exclusive Dealing Without Exclusivity: Screening Contracts, Loyalty Rebates, and the Limits of Antitrust Tests
Oct 25, 2026 by
David Martimort & Jérôme Pouyet
When Competition for Exclusivity Raises Prices: Rebates, Pricing Rules, and the Insulin Puzzle
Oct 25, 2026 by
Daniel P. O’Brien & Greg Shaffer
Why Leaving the Door Open Can Be (Much) Worse Than Closing It: Share-Based Requirements, Buyer-Specific Costs, and Foreclosure
Oct 25, 2026 by
Zhijun Chen & Greg Shaffer
Antitrust Chronicle® – EU Merger Guidelines
Oct 19, 2026 by
CPI