I will leave this world with no meaningful legacy, but that's preferable to exiting knowing that I'd directly helped Big Tech get bigger and even more evil.
If I'd had kids, maybe my calculus would have been different. Maybe I'd have been motivated enough for their futures to sacrifice my conscience for them, but I did not, and so all I had to consider was whether or not I'd be able to live with myself, and the answer for me was no.
There have always been enough decent, even well paying jobs in software outside of the Big Tech companies, even in Silicon Valley, and so paying my bills and saving for a good retirement didn't require the soul sacrifice.
I don't begrudge anyone who bit that lure but I am entirely content to have said no myself.