The common ISA definitely helps -- it opens the door to just running the game image directly and shoving the right dependencies under it (i.e. what WINE does) rather than having to boot the console's OS.
Generally speaking there's been a lot of good work in the industry for binary translation too, cf. Rosetta 2. That's another tool in the box for hoisting a binary on to a different host environment.
Generally speaking there's been a lot of good work in the industry for binary translation too, cf. Rosetta 2. That's another tool in the box for hoisting a binary on to a different host environment.