I can easily imagine a world where you could install an open source PWA from an archive file into its own security sandbox without any further hoops to jump through, and it continues to just work indefinitely because the web has very good backwards compatibility guarantees. Instead, we have to get licensed and notarized by the monopolies and they keep you on a constant treadmill of drudgery just to stay up to date. Or you install somebody else's monopoly-approved "legitimate business" app which steals or leaks your data. Sad!