Some obvious points-
-The Commodore and Atari... "way of life?"... was always different from that of Apple and IBM. Heck, Commodore didn't even *get* autobooting until the 128/1571, right? Software houses were probably sick of printing "LOAD "*",8,1" on their floppies.
-The 1000 was under some pretty severe memory constraints- equivalent to the early Mac, but remember, 128k/256k Macs only handled 2bpp graphics. If you had to load Kickstart, that was already one annoying disk swap, and one chunk of RAM eaten up, however compact it may have been.
-HDs barely existed when the 1000 was launched, and having seen the state of 64/128 solutions, those unfamiliar with AmigaDOS were doubtless pessimistic. When everything worked out as fine or better than Mac and PC, users were already copying and trading to get around the flakiness -- and to recover equivalent functionality to their previous (VIC, 64, Apple?) machines, especially as some of the expected *64* compatibility didn't pan out so conveniently. (Old issues of Info-64/Info provide good evidence; remember, pre-Internet, it was hard for anyone to really get a clue as to what was going on.)
