You'd have to maintain Active Directory / Group Policy /etc. settings under Windows anyway. It ain't like Windows automagically sets you up with a perfect management solution for your organization. When one Windows machine doesn't work right, you're still often the one searching through Stack Exchange, Microsoft's support forums, etc. If you're going with something popular in the enterprise like RHEL or SUSE, you're pretty much on equal footing when it comes to support availability and troubleshooting (if not in a much better situation due to the easier time - IMO - in actually creating/maintaining/deploying system configurations).
Driver issues are indeed significant, however. It's a lot better than it was when I first started using Linux, but printing and scanning is still a major pain point. Enterprise environments have a much easier time here than home users due to being able to constrain driver problems to a select few print/scan servers running CUPS/SANE instead of having to deal with this on a workstation-by-workstation basis, but it's still far from ideal, and very few businesses are truly "paperless".
These desktops are completely virtual; printing is through the virtual desktop to a network printer. They don't even let us hook USB flash drives to the client. So driver issues would be minimized here, which seemed to me to be all the more reason to go with Linux here.
Driver issues are indeed significant, however. It's a lot better than it was when I first started using Linux, but printing and scanning is still a major pain point. Enterprise environments have a much easier time here than home users due to being able to constrain driver problems to a select few print/scan servers running CUPS/SANE instead of having to deal with this on a workstation-by-workstation basis, but it's still far from ideal, and very few businesses are truly "paperless".