Aggregators, by virtue of owning demand, gain power over suppliers which become modularized and commoditized.
The Moat Map
The Moat Map describes the correlation between the degree of supplier differentiation and the externalization (or internalization) of a company’s network effect.
Economic Power in the Age of Abundance
Publishers are trying to threaten Google again, apparently unaware that because of the Internet they have no power: that flows to the platforms that control discovery.
Why Uber Fights
Ride-sharing is a winner-take-all market that depends on controlling demand more than it does supply.