A legitimate concern is that if a manufacturer is able to use under market cost labour to produce a product 30-40% cheaper than the cost using unionized labour, people will prefer that vastly more affordable product. If I could buy a car for $15k instead of $40k, the decision is easy, and I would probably give up the transit pass too. Especially in a car centric society like USA.

On the other hand, high profit margins are a weakness that should be exploited.

They wanna keep making crappy cars without pressure.