Could similar results be achieved with (x)wayland by spawning a separate X server for each application? IIUC xwayland spawns an X server on demand, but just one

Could similar results be achieved with (x)wayland by spawning a separate X server for each application? IIUC xwayland spawns an X server on demand, but just one (so X applications can spy on each-other while wayland apps cannot, and X cannot spy on wayland apps).