Its not proprietary but flatpak is "taking the android route" as in providing a "app store" with sandboxed apps and standardized runtimes whose permissions can be limited and expanded at runtime by requesting the user. they already have a system for tipping devs and IIRC also wanna include a way to pay for apps.

The proprietary version of this would be Ubuntus snaps, but since the proper functionality of them is limited to ubuntu as the only distro i doubt they will take off

In north korea you will go to prison for praising the south... oh wait, Its the other way around

Pls stop giving billion dollar corporations so much credit.

The difference comes from windows dominant (home pc) market position meaning that almost all software and hardware is specifically made to work with it, with even things that officially support linux being afterthoughts.