I'm not sure I really follow your argument, but the open source community seems like a reasonable example. Linux is paid for - big companies sink billions of actual dollars into it, and contributors put in even more value in time. Quality, in the things that are important to the people contributing to it, is high. Quality in the things that are not important to contributors, but are important to many of the people who do not contribute? Not so high.
Quality is also high in ad encrusted click bait sites - in the eyes of the people contributing to them. But that's not you.