Can you explain why this is universally true? It seems that the behavior of companies reacting negatively to unions is a counterpoint to this.
Yes, that's the intended result. Each side has to fight for their own goals. The resulting competition is what limits each side from gaining too much power.
A union that only subsists because it gets special state powers is not a union, its government.
You do realize that all business organizations other the sole proprietorships and simple partnerships (including, but not necessarily limited to, all of, in the US, corporations of any kind, LPs, LLPs, LLLPs, and LLCs) only subsist because they get special state powers, right?
Like the limited liability granted to corporations?
Worker pay has been extremely stagnant while c-suite pay has skyrocketed to over 300x the worker pay.
This wouldn’t be so problematic if worker pay was not being pushed below livable wages. The presence of unions could balance things a bit.