A while back I paid Apple $99 for the privilege of compiling an open source emulator and side loading it to my iPad and then having to re-load is after some period of time. It was not worth the effort.

For the average user, it is not even within the ballpark of their abilities.

I would argue that the reason is less form factor and more computational power. The M1 brings best-of-class laptop performance to a tablet, combined with a keyboard and a Linux distro and I would have a much more powerful platform than my current laptop.