Intel has their fingers in a lot more pies than just consumer CPUs, so no, they're not doomed even if Apple gets and stays ahead in every metric there. AFAIUI,

Intel has their fingers in a lot more pies than just consumer CPUs, so no, they're not doomed even if Apple gets and stays ahead in every metric there. AFAIUI, Apple's chips are optimized for energy use and can't compete on power, and the really impressive thing is their system design and integration. Intel also makes bare CPUs available to businesses and the general public, Apple does not. They're not really competing in their business areas.