No, just the ones who do the thing you don't like.
> The incentive alignment is pretty clear: if Facebook and users let them, devs will show ads.
Google and Apple pays devs show ads. Therefore all games have ads, right? No.
I don't buy games with ads. I have plenty of options.
> Either the app is good enough that people will endure the ads (in which case they will always preser two revenue streams to one)
Again you're arguing that all games that can have ads, do have ads. This is proven wrong by the world. We have two gigantic app stores with 5 million apps between them. None of the apps on my phone have ads.
Developers who do the thing you don't like.
> Every single app developer?
No, just the ones who do the thing you don't like.
> The incentive alignment is pretty clear: if Facebook and users let them, devs will show ads.
Google and Apple pays devs show ads. Therefore all games have ads, right? No.
I don't buy games with ads. I have plenty of options.
> Either the app is good enough that people will endure the ads (in which case they will always preser two revenue streams to one)
Again you're arguing that all games that can have ads, do have ads. This is proven wrong by the world. We have two gigantic app stores with 5 million apps between them. None of the apps on my phone have ads.