Consider how it affects $60 AAA games vs close to free $1 games, it’s wildly disproportional and somehow the $1 game dev starts paying significantly earlier. Now consider how it affects games that make far less than a dollar per user, this is true of many free-with-in-game-purchase mobile games.
Then consider demos, refunds, piracy, and advisarial attacks.
It would have been simpler, more balanced approach, and have none of the pitfalls if they had just gone with a profit share scheme.