Earlier quoted context omitted.
Why do we need a union in a seller's market? If I'm unhappy with my job I can quit and get a new one in a week. It's not about being a knowledge worker. Screenwriters are unionized because there are many more people who want to write than there are gigs, therefore there's a high potential for abuse.
Congratulations if you honestly can "quit and get a new job in a week". This is not true for the vast majority of tech professionals. Even if it were currently true in general, it will not be true during the next inevitable tech downturn (I've survived two of them in 20 years so far, knock on wood). Also, organizing is not just about protecting one's job. It's about collectively negotiating for stuff like pay, benefi…
I believe that we are well paid because of the demand and the amount of money a good developer can make a company. If that equation changes, then why shouldn't developers get laid off or lose their jobs?
Currently, supply and demand is working very well for most of us, especially in SV. I would never trade my freedom for a union that, in all instances, become friction and the bureaucracy of the union benefits from my hard work.