You can already do something like this with Flatpak on Linux https://en.wikipedia.org/wiki/Flatpak https://en.wikipedia.org/wiki/Flatpak or VMWare Thinapp for W

You can already do something like this with Flatpak on Linux https://en.wikipedia.org/wiki/Flatpak https://en.wikipedia.org/wiki/Flatpak or VMWare Thinapp for Windows https://en.wikipedia.org/wiki/VMware_ThinApp https://en.wikipedia.org/wiki/VMware_ThinApp. Want to try it now? You can try it with Steam, which is otherwise notoriously annoying to install on Linux: flatpak install --user --from https://flathub.org/repo/appstream/com.valvesoftware.Steam.flatpakref flatpak override com.valvesoftware.Steam --filesystem=$HOME # run it with this command: flatpak run com.valvesoftware.Steam Unfortunately, if you're running X11, Steam can still spy on everything you're doing in X11. But Wayland is coming/is here, and fixes that too.