Then you have not been paying attention for the past decade, I'm afraid...

Ed Snowden revealed that these companies share their data with the US government:

https://www.theguardian.com/world/2013/jun/06/us-tech-giants...

also, even you think about using it "their own uses" - much of that is scrutinizing you to make you better susceptible to ads and other solicitations by their paying clients. I mean, people are not the clients of Google and Meta - they're the raw material.