Consumers are lazy and big tech exploits it by creating just enough friction to keep them in semi-walled gardens. Enabling installing of an app that’s labeled as „file might be harmful” by enabling installation of „unknown apps” won’t stop my grandma from installing malware but it stops many from even bothering with alternative app stores.

No, this is about official support from Google.

Judge James Donato originally agreed that forcing Google to carry rival Android app stores within its own Google Play store, and share its own entire catalog of apps with those stores, would be the best way of undoing the company’s illegal monopoly over Android applications.

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there may be two different tracks for Android: stores-within-a-store in the United States, and Registered App Stores everywhere else.