Possibly the fact that the 432 was so slow and the momentum was with the 8086 and successors following the success of the IBM PC.
RISC, which in some senses is the polar opposite of the approach taken with the 432, also started to generate a lot of interest at about the same time.
There is an excellent paper by Robert Colwell exploring why the 432 was slow and how it could have been speeded up:
RISC, which in some senses is the polar opposite of the approach taken with the 432, also started to generate a lot of interest at about the same time.
There is an excellent paper by Robert Colwell exploring why the 432 was slow and how it could have been speeded up:
https://dl.acm.org/doi/10.1145/45059.214411
Colwell was subsequently recruited by Intel and went on to play a major role in the design of the Pentium Pro.