I see this type of comment a lot. It's not just iOS, Android now has a review process and Google will keep driving in the Apple direction because it is successful. And if it's like the op says where everythig is in the cloud, then walled gardens don't matter much as long as your service has a native app or mobile web (hint, they probably have both).

What's the really big issue is privacy (which I know is gone) and what facebook is doing to the world. Everyone likes to bash on Apple lately, but Apple is 'acquiring' a lot less of your personalized data than the social networks and Google are (they are also trying to take the lead in being privacy first).

Facebook is just a big ad platform and dont forget 'free' == you are the product.

PWA FTW

[0] https://developers.google.com/web/progressive-web-apps/