I still don't think it would have made enough of a difference. It seems like the DOS/Wintel standard was inevitable. Arguably the one thing Atari and Commodore could have done was make IBM PC compatibility somehow standard within their systems and eventually transition to being the "best" PC makers once their platforms inevitably became no longer viable (let's just say with the release of Windows 95, for arguments sake). [certainly Tandy followed this path, with their somewhat unique PC compatibles eventually becoming full-on generic clones; it didn't end well for them either] Obviously both Atari and Commodore both made stand-alone PC compatibles, but they never really went all in with a total commitment. The argument against that of course is that it would have been hard to distinguish themselves in a crowded market and the margins would have been razor thin. Really, almost all scenarios end up with Atari and Commodore in pretty much the same places that they ended up, at best delaying the inevitable by a few years.
All true. Or a combined Atari ST/Amiga platform might've - however remote the possibility - displaced the Mac as the only other alternative to survive the WinTel alliance. There were certainly folks in the computer press that were advocating both companies hybridize the PC Clone Market by enhancing them with the various features the ST or Amiga had. I remember Computer Shopper had an article that advocated Atari do that and that was back in 1987/88...make PCs with ST features or sell an ST adapter board for existing PCs. Oh well. My original point was the ST and the Amiga put the final kibosh on MSX adoption in North America and Western Europe. It even failed in Eastern Europe when the Wall came down thanks to local interest in the Commodore 64/128 and the Atari 8-bit computer line. And those of us today who enjoy those computer platforms are very thankful of this since a good portion of the new exciting hardware for both of those platforms come from "Eastern" - excuse me, "Central" - Europe.