

Mainly that it’s a custom ARM processor, not your standard x86 architecture like the Intel processors were that were also available in non-Apple hardware.
macOS runs extremely well on it and I think there’s not much demand for a custom Linux distro because of that. Plus the fact that your favorite distro would have yet another architecture they would have to support by adding this in. Asahi is an exception because the team spent time doing it but I haven’t heard of any others getting Linux distros created for it yet. As time goes on and the prices decrease, we’ll start to see more teams dedicating time to creating Linux distros that support it.

It doesn’t help when a good chunk of their customer base still goes on a regular basis. I often see long lines at drive thrus in my area despite combos costing $10+.