One of my applications is distributed through Appimage. It works really well. I really feel it should support containerisation in a similar way as Flatpak does

One of my applications is distributed through Appimage. It works really well. I really feel it should support containerisation in a similar way as Flatpak does. In my opinion, the idea that any application on your system can can touch all your files and access all your other applications is really problematic. You're always just one broken (intentionally or not) application form having your entire system compromised. As best as I can tell, the only solutions that even tries to address this is Qubes OS and Flatpak.