I think Apple would've pursued a "buy-it-and-bury-it" approach. The engineers who worked on the Amiga would have been split up and farmed out over many, many, many sub divisions within the body corporate of Cupertino.
Given Jobs' legendary assholery, I'd imagine that like his edict against doing anything positive for 8-bit apple systems post-Lisa introduction (the II-GS aside), he'd make mention of the Amiga verboten in Cupertino with dire consequences for those who broke that rule.