Maybe because it's not clear there is much to had by trying. The pendulum is currently in swing the other way - see macOS ".app" folders, in effect statically linking apps. And the various Linux initiatives to similar effect.

Apple has been doing that thing for ages.

And much of the stuff on the Linux side seems to be driven by upstream (Flatpak in particular has come out of the Gnome camp), and is riding the "containerization fever".