Hate to say this the OS, the hardware, the software were not what made the Amiga so popular initially. Having games on floppy disk as opposed to cartridge is what sold more A500's than anything else and made the Amiga the games platform of choice. Cartridge-based consoles were very difficult to pirate at the time, and that meant lots of school boys ended up getting an Amiga 500 where they could get lots of games for free, and swap with their mates at school.