"We don't care, we don't have to, we're Intel."
Plus, DEC managed to move all of its VAX users to Alpha through the simple expedient of no longer making VAXen, so I wonder if HP (which by that point had swallowed what used to be DEC) thought it could repeat that trick and sunset x86, which Intel has wanted to do for very nearly as long as the x86 has existed. See also: Intel i860
The 8086 was a stop-gap solution until iAPX432 was ready.
The 80286 was a stop-gap solution until iAPX432 was ready.
The 80386 started as a stop-gap solution until iAPX432 was ready, until someone higher up finally decided to kill that one.