Please explain to me...

Please explain to me. I moved away from Big Tech and installed - even on my old MacBook Pro 2015 - Linux Mint. I use open source software and my social media is on Fedivers. I tought I was “safe” by using Linux, but the Linux Foundation is sponsord by a lot of money by Microsoft, Amazon, Meta, Google, etc… etc… the exact companies I try to take some distance off. Can somebody please explain me if Linux is “sold” to US Big Tech now?