Many of the apps in the Apple App Store—including Coinbase—also offer a web interface which would work fine in Safari. People would not even have to switch phones.
There is a reason these companies make apps, they increase engagement and make it easier to track users. I don't big tech is ready to give up apps on iPhones.
Me either, which is the point: companies complain about the App Store cut, but they are obviously getting value for it because they don’t pull their apps.