Stiglitz specifically wrote about minimal interventions of e.g. just supporting/hosting (reliable) information exchanges. His proof showed that there were some markets where there was no value for any individual player to "pay" for the information needed to improve a market, so it stayed bad. Stiglitz' career definitely moved in a direction of more interventionist policies (of which I'm probably more sympathetic than you to some/many of them).

Are you suggesting that I'm trying to curry political favor with...Stiglitz (or someone else)?