It seems like with Intel's superior process and production scale they could easily enter into the ARM market. Is it just not profitable enough for them to do this? Or are their fabs too committed to producing x86 chips? Missing out on mobile entirely seems like a pretty big strategic mistake.
To be fair, it was a different world (almost 20 years ago... I feel old).
It doesn't matter anyway -- after several years concentrating their immense muscle on battery savings and integrated graphics, they have caught up a lot. CoreM / Skylake can fit most use-cases where ARM stuff would be called for, at least in the high-margin market.