They would give out the following statutory warnings:
1. Macs are not as robust as Windows (slow claps...!)
2. Macs are costlier than Windows and they are not worth.
3. Corporate updates roll out very late.
4. The IT admins won't be able to help immediately whenever there is a problem.
Whenever someone reaches out to the IT dept about issues on Mac, they don't fail to give that "I warned you, already" look. Damn!
My org still didn't roll out the macOS Mojave update while it's almost time for this year's release and they state some random reasons everytime.