I wonder if there was consideration within Apple of switching back to PowerPC (power9/power10) now that it is open (for whatever that means, I am not sure)? The

I wonder if there was consideration within Apple of switching back to PowerPC (power9/power10) now that it is open (for whatever that means, I am not sure)? They would appreciate the control that would give them. Does somebody have an idea how much approximately would it cost Apple to switch the Apple A14 from ARM to POWER? Usually it is said that the instruction decoder is a small part of a CPU core, and the ISAs are not hugely different (compared to AMD64/Intel, at least).