An interesting perspective is the archive of InfoWorld magazines available on google books - the entire run from 1980? maybe before? to 2007. There's a HUGE "Amiga" spike from '85 to '87, and it drops off precipitously after that, focusing solely on the Mac and PC. From '82 or so onward there was little-to-zero "general" computing information and the focus of the mag is solely on business applications, which makes the Amiga information all the more interesting.
I wish there'd been a solid Office suite from MS for the Amiga, might have made a difference, if only a slight one. But the first inkling of something more than "here's a bunch of DOS programs sold in the same box" wasn't until 1990, which was the beginning of the end of the Amiga in the US...sadly.