Snap / Flatpack are probably the most promising attempts in this area.
Personally I think it will be incredibly hard and tedious to morph the Linux desktop into a properly sandboxed environment, exactly because you are fighting long established conventions and norms in just about every aspect of development and application usage.
Fuchsia (Googles new OS) might prove very interesting in this regard.
I find most of the time when I’m installing snaps I need to use —dangerous. I’m not sure what exactly it does, but my guess is that it renders whatever security snaps are supposed to provide moot.
Personally I think it will be incredibly hard and tedious to morph the Linux desktop into a properly sandboxed environment, exactly because you are fighting long established conventions and norms in just about every aspect of development and application usage.
Fuchsia (Googles new OS) might prove very interesting in this regard.