I said contract negotiations, you said strike. Even in this example, and there is an army of scabs outside the door, if a strike and its associated costs would cost the employer 75 million, it would be rational to give the union its 50.
Anyway, I agree with you that simultaneous productivity gains and deskilling as a result of AI efficiency, if it comes to pass, would work against labor power. The claim is that unions would hold no purpose under such an arrangement. I'd say if anything they'd be more important. The question is, would an employee rather have union protections if this comes to pass, or not?
Understanding the dynamics and likely limits of what those “union protections” would be critical to answering your last question.
Contract negotiations are back-stopped by strikes. If a union is asking for an extra $50M per year for their members, they’d better have a credible threat of a strike to back that.
I think most every employer would much rather fade a $75M strike expense than agree to the $50M every year expense. It breaks even in only 18 months on a cash basis, plus gives them additional union-undermining value in a very public display.