Maybe even making deals to compete with emulators + pirated ROMs.
Just fantasizing a bit here... thinking of Apple-approved N64, GameCube, GBA, PSP, even PS4 emulators with licensed games for a somewhat medium to high price tag - why not?
And, speaking from experience, Nintendo definitely wouldn't be on board. As far as I'm aware, they have never authorized any kind of third-party emulation of their games; even their first-party emulators like the NES Mini or Virtual Console have always been limited-time offerings with relatively small selections of games.