That's not really the problem, though. Free demos have been around for ages. The issue is integrating cash payments into the core gameplay. This necessarily undermines the integrity of any game that uses it, unless it's really a game designed around real money like poker or blackjack.

Studies show that free demos aren't the optimal way to squeeze money out of the market. IAPs are. So the vipers in suits demand IAPs.

Killing the goose that lays the golden eggs probably also seemed like the optimal strategy at the time, too.