Microfoundations Blog

Dan O'Brien

Jun 101 min read

The 2023 Merger Guidelines: A Giant Leap in the Wrong Direction

This paper and associated slide deck present a limited critical review of the 2023 Merger Guidelines based on economic reasoning and...

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Dan O'Brien

Feb 141 min read

Lessons from Foreclosure Parables: The Need to Tether Vertical Merger Analysis

Abstract Policy authorities are pushing non-equilibrium arguments (“untethered vertical math,” or “UVM”) to challenge vertical mergers....

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Dan O'Brien

Jul 31, 20231 min read

Tying, Bundling, and the Microfoundations of Double Marginalization

What is double marginalization? The answer is technical, but the technical discussion is long overdue. Tying, Bundling, and the...

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