but I recall PPC being joint design of Apple and Motorola with Apple effectively locking everyone else out of using it on the desktop.
PPC was originally IBM going to Apple and saying they could produce a chip, Apple wanted a second source and they didn't want to mess up their relationship with Motorola so they got IBM to bring Motorola in.
So you can't really blame Motorola for ditching 680x0 on the desktop and switching to PowerPC, they had a gun to their head.
They had produced a legit console, sure, but they were still treating it like a computer in allowing people to sort through software of varying quality and compatibility.
They were in dire need of content, they didn't have the time to enforce quality. Sony had a similar issue with PlayStation games with some of the early titles not meeting their strict development guidelines. Commodore had the additional problem of not having enough money to do anything if they had wanted.
A serious computer hardware vendor makes a market analysis and picks the chip that fits best to their requirements, after having made a market analysis what the customer wants. CBM did not, and went bankrupt.
commodores problems started after the A500 release when they came up with the idea of AAA instead of something a bit more like AGA. They might have then had the time to actually finish it, like adding the chunky pixel modes that they had wanted to add to AGA. If they had put in a blitter that could do simple texture mapping then they could have had a chance.
The new people would then not have been brought in to rescue development, which wasn't working effectively. They caused an even bigger mess. The CSG pollution and the xor patent were big problems too, it's a complex situation