The big jump wasn't in performance, but in power consumption. The difference between my M1 and i5 MBPs is far greater in battery life than in CPU benchmarks. I don't see either Intel or AMD doing leading edge design for ASICs that can run on a smartwatch or a "mini" smartphone battery in the near future.The room for big jumps in performance is getting smaller and smaller for Apple silicon...
who knows if X86 could reach ARM in some years (if they find the way tonreduce size also)