For wages I agree, but I think things like changing what's "normal" in employment contracts and working conditions are one thing that you often get from a union which tech has been lacking. I'm not sure of the overall pros/cons, but to make significant pushback on things like noncompetes (where "significant" means more than a small % of people managing to write them out of their contracts) would require collective action of one sort or another imo--- either some kind of union, or else directly via government (like CA's law on the subject).