Please read your own thread 'things never understand' more carefully. You will find it not difficult to understand why HAM is not the best option for a desktop.
2MB ram in 1987 would have made the A500 too expensive. Perhaps in the A2000 this would have been justifiable.
Also remember GUI's came a long way. Despite of a machine being capable it is a learning curve. Point an Click was novel for the masses in 1987. I was still 'pressing play on tape' in those day to load my games. The biggest compition was the Mac and it was monochrome so why invest more?
