The companies can call it whatever they want, but it reflects the power imbalance between worker and employer that unions exist solely to re-balance.

Some managers in a board room somewhere made a decision that depressed the wages for how many thousands of workers, and what can those workers do about it? Jump ship to...the other companies that colluded to depress their wages?

This whole "you're paid enough so don't unionize" thing is so weak, when obviously people could be paid a lot more, but aren't, because, surprise, the companies still hold all the cards.