Quad9 (https://www.quad9.net/) exists and is a 501(c)(3) DNS provider with a relatively reasonable privacy policy. It supports direct DNS resolving and has DOH servers available.
The problem is not so much the lack of available infrastructure but the lack of awareness of alternatives existing, so everyone ends up just using the known defaults (google or cloudflare mostly)
The problem is not so much the lack of available infrastructure but the lack of awareness of alternatives existing, so everyone ends up just using the known defaults (google or cloudflare mostly)