The 68k was about a year too late to be considered for the IBM PC. I do wonder what an alternate world in which 68k based PCs were the norm would have been like.
The IBM PC would have had a slower start—having an easy path for CP/M devs to become DOS devs meant there were robust offerings early in the 5150's life.
The move to out-of-order 68000 CPUs was harder than for x86. 68k is self-conciously CISC in a way that the 8086 was not, its addressing modes were a particular headache. It's also unliky that Motorola would transform itself into a CPU company like Intel did. Overall, a slower 90s.
