2) Apple Silicon are the only ARM parts that aren't dogshit slow compared to desktop processors.
This is why Apple is building the future and virtually no one else is: Apple controls the entire hardware and software stack from the silicon on up. A hybrid hardware-software solution, in the form of Rosetta 2 plus special modes in the M1 and later chip to enforce x86 style memory access, allowed Apple to emulate x86 apps at acceptable speed.
Or the oxygen in that space has been sucked out by Apple.