Whataboutism. Who cares about the Google Playstore?The App Store is far from a disaster and it is still 10000 times better than the Google Play Store in terms of quality and available apps. Google doesn't even really review apps. I once accidentally pushed an update to my app out that literally made the app crash when users opened the app and it got through a Google review for the Play Store. It was just a couple of characters in a line of code that caused the issue, but if anyone at Google actually reviewed it, the app would not have worked at all, and should not have been approved. I discovered the error myself a few hours later and pushed another update out, but that would never happen with the Apple App Store.
The fact is that Apple claimed that the 30% is for the maintenance and curation of the App store. But the money clearly did not go it's intended purpose.