“an application menagerie way beyond what the Mac users do”
My how condescending of you!
This Mac user has a WIDE variety of applications on his Mac, including a copy of Windows 7 he runs under VMWare Fusion. In fact, I have two flavors of Windows and a Unix distro on my Mac right now.
How many operating systems can your Windows box run...simultaneously?
I could make a much cheaper computer and install the Apple OS on it, but that would be illegal. Apple does not allow that as part of its license, not even for experiments by hobbyist.
Conversely, I always ask people who run a Windows OS in a VMware virtual machine if they have a legal license from Microsoft to do so, because like the above, that is actually required.
For Microsoft, as long as you acquired/bought the license legally, they’re just as happy as if you got a Dell, Dude!
Seriously, for them the pay is the same. Someone bought one of their licenses (for money, or the distributing vendor did).
Now, if you just installed it without having a license... That would be illegal.

Here I have 12, with 7 running simultaneously. I'm also managing 3 other Hyper-V host servers, one on Nano server, consuming very little resources.
Do people make instrumentation interface UIs that run on your mac?
Odds are no.
SAP client customized for your corporation? Tough.