It sounds like you're concerned with EEE: embrace, extend, extinguish. While that might be a problem for centralized pieces of software, who are dependent upon revenue streams, core distros like Debian, Arch, Fedora, and openSUSE are developed and maintained by the community (and sponsors).

If sponsors all pulled their funding tomorrow, the projects would not suddenly cease to get updates. By extension, sponsors don't get special seats at the table just for being a sponsor; it's not some corporate buy-in where they get 5% voting share for donating $1M to fund hobbyists to work on the code full-time. Likewise, they don't have special push access to inject "features" (read: enshittification) into the codebase that will eventually hamstring the code. Somebody would notice a bad pull-request and say something.

And even if they miraculously did, the codebase is open source. There are enough motivated people in the world who would fork the code into something free and open again. It's one of the biggest strengths of FOSS.

Sponsorships help the development happen faster, but sponsors are not the drivers of Linux—we are. Choose the distro you like, and enjoy!