Piracy and absolutly nothing to do with it. The Amiga was dead here in the US before the CD rom was widely availible. Piracy happened just as much on the PC as the amiga. As a matter of fact, no system has ever been successful without piracy. This would be due to the fact that people need a critical mass of software availible to them before they will buy hardware.
The upgradability of the A500 was the killer for me. Particularly hard drives. I could pay $500 dollars to add a SCSI hard drive to my Amiga, or I could spend $800 for a brand new computer with an MFM hard drive.
Yeah, yeah, I've heard it. "SCSI is better than MFM". Well who cares what the underlying tech is. All that matters is the user interface. What do I use to put stuff into the computer, and what do I get out.