Apple abandoned PPC after it became obvious that laptops were going to become more popular than desktops, and the G5 cheese grater Mac Pro required liquid cooling for the dual CPU chip versions.
Apple moved from Intel to ARM for the exact same reason. Intel no longer cares about pursuing high performance with a low power draw. They have returned to the Pentium 4 strategy of performance via clock speed and power increases.
https://www.extremetech.com/computing/338748-raptor-lake-to-...
If that isn't a return to the Pentium 4 strategy, I don't know what is.
Intel isn’t relying on an architecture thats about to run them into a wall like the Pentium 4’s architecture was about to, what keeping them is second is being behind on their process, and beyond that, execution.
You can argue that it's not what they "want" to be doing, but it's certainly what they are doing.
https://www.digitaltrends.com/computing/intel-raptor-lake-ma...
What you can't change is the reality of Intel's actions.
Then they saw how performant, long battery lasting and cool their iPad (ARM chip) was.
This became an easy decision for Apple to ditch Intel when they saw how much better their own iPad Pro was relative to the 12” Intel MacBook.
For those who have being using Mac since the PowerPC days all have used this argument against X86 chips. As you all know, Apple actually had to switched from RISC chips to Intel X86 chips, before they switched back to ISAs chips now. Just saying performance is not the main reason to switch chip sets.