This will not be true of the stores that Epic, Facebook, and Google, and Amazon et al would start up on iOS.
https://www.businessofapps.com/news/amazon-app-store-vs-goog...
Interestingly, there appears to be more revenue made per user on the Amazon store than on Google Play:
https://www.mobilemarketer.com/ex/mobilemarketer/cms/news/re...
Note that as per Epic’s other lawsuit, the Amazon App Store is working at a severe disadvantage to Google Play.
People seem to be buying into Epic's own claims of self-importance. They may be the ones to have finally advanced grievances against the App Store to the lawsuit, but they do not- nor should they- have the ability to frame the entire discussion. Their standards for openness are debatable.
Android just isn’t a model for what would happen on iOS. Obvious really, because Android has never had anything like the same success in app sales.
As to how the Android users keep acquiring malware, I have no idea whether it’s from the Play Store, or if they download free apk files of paid apps, or if they download it through ads or from emails or whatever. I just know I have to help fix them regularly, and if iOS is forced to open up then iPhones will suffer from the same malware issues that you see with OSX/Windows/Android.
(Note: I believe Google's absolute numbers are significantly underestimated due to the poor performance of Google Play Protect compared to other malware detection tools, but so far they are the only source I have found that publishes relative numbers between the Play Store vs side-loading.)
As some high profile examples:
- HummingBad infected 85 million devices primarily via direct-download on malicious adult websites. (https://www.zdnet.com/article/this-android-malware-has-infec...)
- Agent Smith infected 25 million devices primarily via a third-party app store. (https://www.theverge.com/2019/7/10/20688885/agent-smith-andr...)