Earlier quoted context omitted.
I do not understand why ARM is considered lesser technology. RISC was always considered to be better then CISC in many academic circles.
Well, two main reasons: 1. Innovator's dilemma: https://en.wikipedia.org/wiki/The_Innovator%27s_Dilemma ARM in this case is the underdog, attacking the incumbent x86. It is the lesser tech because it started from "below" (lower value niches not taken by the incumbent which prefers higher profit margins). 2. RISC vs CISC has never been settled. Until Apple (and Amazon super recently) produced their super recent archit…
x86 was itself a kind of underdog in that space, losing out in sheer performance and bandwidth to the high-end RISC market, but making up for it by, you know, being cheap enough that "regular people" could go and buy a family computer with an x86 processor.
Intel managed to slowly improve the various deficiencies over time, and produced a processor not only affordable, but also superior to the incumbent RISC chips in all but niche areas.
I think more than the ISA, Apple's M1 manages to be so good at its job for similar reasons to the old RISC chips -- it's built from the ground-up with a pretty specific target application, rather unlike x86, which has to be all things to all people, with legacy support and scaling from laptops to quad socket 3U servers.