your own personal information that is being bundled up and sold off.
I repeat, there is no need to "monetize" everything.
Does that personal information have any monetary value to you? Can you sell it? Does someone using it take anything away from you? If not, then you are losing nothing while you get to use the services of a site without having to pay for it.
All that information does is to enable someone to send you advertisements that might interest you. If it doesn't interest you, too bad, but it's no worse than all the junk mail you have been receiving for so many years.
Anyhow, if you do not like the way it is, no one is forcing you to use any of those sites. It's not like the government taking taxes away from your pockets.