I absolutely agree with you about paying actual money for a full game. The problem with this though is I've been burned a few times buying a game, only to have it become free with in-app purchases later on: functionality that was previously included is removed and players must now periodically pay to get it back (usually in the form of some kind of temporary 'power boost' pack).

I guess the developers reasoning is they can get as many suckers as possible to pay for the full game after initial launch, then after a couple of months they squeeze more money out of it by changing to a pay-to-win format which hugely increases their user base.

It's a disgraceful approach and I certainly won't deal ever again with any devs who do this. Unfortunately, such devs don't really get much shaming so they probably get away with it.