For example, I have been using Google or Apple for 7 years, and seeing that I was fingerprinted, tracked through third-party cookies, etc. I want to switch to a more private option.
But is it worth it? They know about me, they have now AI that can just use the behavior pattern for the last 7 years and still track me.
Again the question comes, should I become "privacy-focused" despite my data before I was "privacy-focused" used and sold?
Yes, because even though your data might have been used and shared in the past, over time that data will become more and more irrelevant especially as you stop using privacy invasive services. For example, if you stopped using ALL Meta services, that profile of you that they have will eventually become very old and outdated and useless as they can not really sell it for targeted ads or anything as not only is it old, you are not even on any of the platforms to be served ads to begin with.
Well... I am still on YouTube, no good gaming videos on Rumble and Odysee.
It depends on your threat model. Do you think Google knowing your video watching preference is dangerous? For me I don't care if Google knows my music and video preferences in general. If I'm watching things that I don't want Google to know I use Newpipe on a VPN. But sensitive document uploaded to Google drive? Not anymore.