Cost of hiring increases and there are fewer gigs around. Unionisation adds nontrivial transaction costs, so there will be fewer opportunities for new entrants, and fierce competition among existing workers for shrinking number of gigs.

For example look at how women actors get their cast roles with harvey weinstein studio - did union protect them from sexual predators?

Look at average unionized actor - very few are making big bucks, most are just surviving and have other day jobs.

UAW workers are still at the mercy of their employers, and are only dragging their companies down, while non-unionized automakers are taking over market share.

I am totally fine that my bargaining chip is my ability to work - it is the only austainable way. Otherwise there will be a lot of useless dead weights who dont contribute to the topline, and leech off of bottomline. (There is already unemployment for this use case).

Look at NYC MTA - all unionized and completely inefficient, unionisation can only work in monopoly situation.

Tech in the other hand is high growth particularly because all monopolies are being attacked by more flexible and lean startups.

Hollywood is not growing at all, while big tech is carrying the whole world