This doesn't seem like it is playable natively on PC, no? Please correct me, if I'm wrong.
No, it isn't, but GOG has multiple games that are emulated, as observed in this thread
, so I'm unsure why it would be a problem, specially for a group of systems as accessible as the Game Boy's. They just need to wrap the ROM with an emulator that's permissive enough about its usage and pronto.