>This is the future: custom hardware and custom software working together as a unit.

Yes, the M1 is a product of a company with complete control over software and now hardware, including in this case the SOC that combines RAM and CPU. This is unheard of in a mass-marketed personal computer; I'm not sure this has ever happened before. Commodore used the 6502 CPU from subsidiary MOS Technology in its computers from 1977 onward, but I don't think MOS ever produced RAM, and certainly not integrated into the CPU like this. TI used its own CPU in the 99/4A, but not sure if TI ever produced RAM and, again, there was no RAM/CPU integration like M1.