Last time I checked, Photoshop's (for instance) installed base was something like 50% Mac. Don't know about the rest of the CS apps, but I'm willing to bet the Mac segment is vastly disproportionate to the Mac's overall market share.
No matter how gnarly Apple gets about the mobile space (and that's all it is, they've done nothing to deprecate Adobe on the desktop), Adobe simply can't afford to mess with their Mac Creative Suite apps. It would be corporate suicide.
Yes. Macs have a large marketshare but not to long ago I checked out Avid Symphony in Burbank. One of the largest Avid/FCP schoos you can go to. Anyway the vast majority of workstations are PC now. I was schocked. When I asked him why he said they were faster, cheaper, servers worked great, blaa, blaa, blaa. And that was vista not windows 7 so anything can happen, for example, when Apple came out with Logic from Emagic, adobe didn't releaseca mac release for nearly a year while the pcs got them. Not that jobs cares anyway. To him it's all consumer and iPhones, ipads and app store.
They don't even go after the prosumer musician, HUGE MARKET with a decent priced FireWire, 4-8 core mid range headless mac. Workstations were not always made out of server parts. That's just to Jack the price up. When I hear arguments on how a PC can cost more part for part compared to a mac, you can get better performance on non server faster workstations and the musician editor needs FPU AND CPU power.
To each his own.