I wouldn't be too concerned, see how it is on Android. Every major app is on the playstore, which takes a cut similar to Apple. The only exception that I can think of is fortnite, as well as many small open source apps. Fortnite cases are rare, as the game would need to be popular enough to make people willing to install it. That's why no other large company or app has done it. Small open source apps are a plus to those who know of them. Platforms like f-droid are fantastic for finding free, zero-ads, zero-tracking apps.