Two main points:
- no one unified distro to keep things simple (thread OP)
VS
- people don’t care. Someone else needs to advocate, sell, migrate, and support (medium term) Linux (whichever distro they want) for the intermediate term (few months at least) - thread response).
I think a lot of the 97% desktop market share is like this, instead of the hands on 2-3%.
Don’t know why this is downvoted. Even distros like Debian, that are 100% FOSS otherwise, will (often) load some proprietary firmware because otherwise it would barely be functional on any modern computer.