Because it is too complicated and non-intuitive
I don't think management knew there was any difference, or why everyone was requesting SVN instead.
The only one that was truly intuitive to me was Envy/Developer. It only really made sense because we used it in Smalltalk but I really liked the packaged nature of change sets that it modeled.
Git is nowhere near the worst of these. SVN, hands down a cranky and unreliable dumpster fire was the worst.
With git at least you can get way with using a surprisingly small subset of features if you regularly merge before doing your pull request.