The main bit I see was commodore resting on it's butt. Approaching the Amiga market like the C64. They could release a C64 in the early 80s and leave it unchanged for years.
The A1000 started out doing almost everything better than anything else.
The A2000/A500 didn't improve much, but the industry had moved closer.
The A3000 was a big step ahead, but everyone else had moved ten big steps ahead. A3000s were just "A very good machine" instead of completely eclipsing everything available
By the time the A1200/A4000 came out, as standard machines and with the expansion available at the time, there were some parts to the Amiga that were painfully behind, with a few exceptional abilities - cue the beginning of really wedging into the niche market
Those of us who stayed with Amigas for years afterwards (Until mid 2000 for me and my A1200) found that our machines filled our needs just fine, and as a fiercely loyal community the hardware from 3rd party suppliers kept coming out that enabled the older machines to keep up to date with a little work and a little hunting around.
dana
