Greed. Greed from Commodore killed the Amiga. Piracy is an ongoing problem to this day. XBox survives. Playstation survives and DVD/Blueray survives.
All of these are raped on USenet. NZB's are full of current day offerings.
Commodore failed to invest back into the Amiga. Dumping machines with no real improvements and nothing new. I have over 10 real Amigas still operating. I bought 10-20 Originals, most of my stuff is from my BBS uploads.
My BBS hurt the sales and all involved in that food chain. For that I am sorry. However Commodore with greedy bastards like Medhi Ali, a worthless managing director with no direction except to run the company into the ground while making a profit, killed the Amiga.