I'd have to say the biggest reason why a lot of people haven't switched is time and Quark. Yes, I've read the threads of Quark vs. Indesign, but if your whole company uses it, it would cost a lot of money to change. Plus, you have to train people to use OS X. The company I work for has over 20 computers all running OS 9, because it takes time to learn the new operating system. and if you're a graphic design firm, time is money, you can't have people being slowed down because Quark keeps crashing classic, or the interface is just so slow, or one thing has changed an nobody knows how to do it in OS X. You also might not have the time to set up everything again. People know how to use the printers, people use appletalk, the little things that changed slow people down because they're just not used to it, so its not worth switching. In fact, we tried a few computers, but in the end we switched back because it kept messing people up, and nobody had the time to figure it out when they're in the middle of work. I think the time will come when we need to replace our computers, and then we'll have to change, but by then we might also have a few people (you know, those computer geeks in the agency you turn to to fix problems) who know how to use it, and can show the rest of use how to get around those little differences that slow your workflow down.