The walled gardens from Google and Apple are clearly a duopoly, and these revealings from Epic show just how far these companies will go to prevent competition.
We need a third option for an app store that works on both iOS and Android, featuring lower rates, desperately. As another comment suggested, maybe Microsoft can be the new entrant here.
A large part of why iOS has a perception of quality is their handling of the app store.
For a frankly shocking length of time, basic actions like installing a well-rated flashlight app from the Play Store result in your lockscreen being replaced with ads.
Apple on the other hand was pretty ruthless about rejections.
Technically AOSP ("bare Android") has no reliance on an app store, but having someone vetting apps and providing ancillary services through it (Google Play Services) is so valuable that manufacturers are willing to give up a lot of control.
It's even simpler than that: Allowing others to dictate the terms of interacting with users would be very bad for Googles bottom line. What happens to Google Maps dominance without knowing who's going where (for new/closed shops) and how fast (for traffic information)? What about Chrome pushing users to install on desktop, Photos being built-in, and basically every other Google property being the built-in default? Android reports so much information it means Google will, IMO, always and forever have an edge over every other advertising company.
What we need is to have an app store as a public service. Why on hell would you want a for-profit company to decide what companies are allowed to exist?
The Google Play store is banned there, so there's no obvious "default" choice. Other than whatever your phone manufacturer preloads, which will probably be its own store, not necessarily a good store.
To be clear, most of the alternative app stores here are so bad you’d never want them near your phone. They do things like slip spyware into apks and ask for broad permissions for extra stuff an App Store should never do, like “help you back up your text messages.” (This was in 2014 anyway, haven’t touched an android since)
Choice is good, but there’s something to be said for a locked-down ecosystem protecting consumers from bad actors. Not sure how to split the difference. I run linux on PC but have an iPhone because it needs to just work.
We need a third option for an app store that works on both iOS and Android, featuring lower rates, desperately. As another comment suggested, maybe Microsoft can be the new entrant here.