Handbook of Media Economics, vol 1A

in the examples above, the equilibria that do not involve full disclosure require a proper

specification of the probability distribution of product types and consumer types. Second,

as shown by

Koessler and Renault (2012), there exists a class of match functions that

are consistent with some horizontal matching, such that the unique outcome is full

information disclosure independent of the probability distribution over types.

To illustrate, consider the following example adapted from

Koessler and Renault

(2012)

. A firm sells a video game whose type is either s

1

or s

2

. Buyers may be ranked

according to how many hardcore or casual players there are in