I've seen a lot of people comment that he's giving up $50,000 per day. As so many people already have the app (and it's not being deleted from their devices remotely) isn't he still going to be receiving that ad revenue, it just won't be increasing anymore? A cynic might say he announced the 24 hour deletion to get as many people as he could to download it, because even after it was deleted they would be playing the game and he would be earning.