>>comput+K5
What competitive advantage does Intel have with either of those? ARM winning would be a catastrophe for Intel, and RISC-V would only be slightly better.
But the main reason to focus on x86 is that it has 47 years of existing software built for it, and with the high end mostly still on it, more gets made every day.
>>samrus+Bc
There's no fundamental difference between risc, arm and x86. It looks like when all else is equal (fab, die size) the chips tend to have about the same performance characteristics - so why mess with what's working?