It's impossible to build a community of users if you publish on the App Store? That's nonsense. All 3 of those games are by known developers with a pre-existing fan base and all 3 have user communities that are distinct from their retail channels. There is no reason to believe that the retail channel must provide a user community in order for a user community to exist.

But you cannot kickstart an ios game because you don't know if you can deliver. Due to apple censorship.

Huh? There have been multiple successful kickstarted iOS games. The most high-profile is probably Republique (https://www.kickstarter.com/projects/486250632/republique-by...). And I have no idea what you mean by "due to apple censorship".