If you are big enough to get the enterprise version, everything apparently can be tweaked. But there are a lot of tiny businesses that order a PC from Dell, install some software for their vertical, and then do little more than regularly install updates. My old dentist was a two person operation. They aren't going to get the enterprise version yet they need to handle medical and billing records securely.
Either I'm totally misinformed, or the professional version of Windows isn't suitable for many professionals. I'd be happy if somebody could explain why it's the former.
I also wish Microsoft were more transparent about the data that is sent to them. Why is a machine with all the options set with privacy in mind still in constant contact with Microsoft?