Since Maya won't be going 64 bit on Mac for a long long time,
Nope. It's 64-bit
this month on the mac. Too late for many, though.
A company who uses Maya should have migrated to windows even if CS4 for mac was 64bit. So photoshop has nothing to do with it.
Photoshop has everything to do with it. There was a 10 person 2d department at my company, and those users needed Photoshop 64-bit. The TD's, modelers, and animators (different dept.) needed Maya 64-bit. Hell, if Photoshop was 64-bit on the mac a while ago, they would have stayed Mac. The finished files don't matter so much.
if you are a company that uses Maya, it makes sense to go Windows anyway. (Why would they using Maya on Mac in the first place, it's not even comparable to the windows counterpart)
You don't seem to be aware of the Autodesk releases or the need for 64-bit applications, so I'll trust my own council, co-workers, and experience on this one.
You are thinking in terms of budget based on your experience, which seems to be very different from mine.
No. You still haven't given a single example of an end user who migrated to windows ONLY for photoshop64
Very few people ONLY use photoshop as their app, that's why. So how about this: the 2d/painting/texture dept needed 64-bit, the animators, modelers, and TDs needed Maya 64-bit. You don't have to believe it, though.
For only Photoshop, everyone knew that CS5 would be 64 bit in the first place. So switching doesn't make sense, you can just wait 1.5 years instead of forcing people to get acquainted to a new platform.
Wrong,
yet again. Being forced to waiting 1.5 years is
exactly why people who need it would switch. On top of that, people didn't know how long the wait would actually be. In production, you can only weigh tools on what they can do now, not the promises to come.
Production artists spend most of their time in the
application, not the OS. A few fumbles in Windows explorer or learning new hotkeys is not something to worry about.
Regardless though, this is all off topic.