Some people just like Macs better. Some people have Mac customers going back a long time. Some people like the idea of being a medium-size fish in a little pond much better than that of being an amoeba in an ocean. There are lots of reasons why ISVs write Mac software. The fact that they do so seems to indicate that they're not interested in competing with Windows software on a PC.
But we'll see. Maybe Steve's [link|http://www.folklore.org/StoryView.py?project=Macintosh&story=Reality_Distortion_Field.txt&sortOrder=Sort%20by%20Date|RDF] will be cranked up to 11 and it won't be an issue on Monday. ;-)
QuickTransit sounds similar to [link|http://www.newplanetsoftware.com/jx/galaxy.php|Galaxy] from Visix. They didn't survive.
Cheers,
Scott.