I suspect (and have for a long time) that senior management looted the company from the top, as we have seen in so many cases recently (ENRON, etc.). Managemwent practices were as far ahead of their time as the computers. ;-)
The thing no one has mentioned is the (to me) obvious way that the company regarded itself as a novelty toy company. They unloaded tons of C64s thru Toys R Us and similar venues, and were distressed to find that customers wanted support and continuous development of the computer. The Amiga was treated the same way, a cheap novelty item that might make profits for a season or two and then on to the next thing. It wasn't all that way all the time of course. Some good computer people were trying to point the way and got half listened to from time to time, but in the end the managers appear to have decided to steal the money and get out of a business they didn't understand before they got hurt.
Just MHO of course.
CRL