Intel has had a terrible habit of overcomplicating all of their attempts at a "serious" ISA and CPU -- iAPX432, I860, IA64 -- in absolutely impractical and crippling ways, while the stop-gap shitty little 16 bit 8086 [1] accidentally got used by the largest computer company in the world (because the far better M68000 was late) and untold gazillions of dollars fell on Intel.

[1] Morse was given three months to design the ISA -- shades of Eich later having 10 days to design Javascript