The industry is skewing heavily indie now, and there's no money in the indie game engine segment. Maybe a few AAA titles will be unhappy that Epic can negotiate more aggressively, but mostly this is a nothingburger, particularly given idTech's rep for batteries not included.
Among us made $105 million. I'd say there's plenty of money in indie, so long as your not rehashing other people's games yet again.... (Though the FPS industry, a long running doom clone saga, does just fine on this premise)