From what I have read, Commodore had money troubles and delayed development of AAA until it was practically too late, they then realised it was too late, cancelled AAA and started on Hombre, which was also too late and the company folded.
If Commodore had better management they would have brought out a AAA based Amiga at the right time and continued selling Amigas, they did licence the Z8001 processor for use in another aborted project so they could have licenced the 680x0 and made it part of future chipsets.
It is amazing how these management types believe they are worth million dollar paychecks with absolutely no evidence to back up their demands.
the basic difference between the apple community and the amiga community was that there was always apple as company leading the development and thus forcing the developer and user to go with them. Would Commodore have survived the same would have been the case for amiga. There would some form of AmigaOS (however it today would look like), no MorphOS or AROS. 68k would propably only existing as emulation (if ever) because they would have changed the hardware. Chipsets propably would not exist anymore. It would be a different machine today. But that did not happen, AROS is the oldest OS, MorphOS was started in the late 90s, there were the last 68k updates around 2000. That was the first split in NG and 68k. Then AmigaInc. decided to do their own "official" OS and the PPC platform started to divide too. I think what I read was that at the beginning both AmigaOS and MorphOS were running on classic hardware supporting PPC accellerators but both supporting different standards. I read discussions that this would destroy the last remainders of the market. Then arguments between Ben H. and MorphOS teams started and escalated with Ben H. claiming that MorphOS (and AROS) are illegal using 3.1. sources. And since then we have our current situation. All are using different (closed) standards and different components and are different on API level. But it is how it is.
When I have summarized something wrong be free to correct me. That is what i read in different sources.