Right, and that's the entire point of the "expense questions" the reps are talking about. They now not only have to vet Firefox, they also have to find a 3rd party tool to vet & buy.
Plus the cost of training IT people to install Firefox across thousands of computers (you didn't think they'd install it one-by-one did you?).
Awesome project; but the presentation of this as a solution to big organizations/companies is lacking, or to put it more bluntly, their website sucks. It would be great if the Mozilla Foundation would host this project and make it more presentable.
First result for "Group policy Firefox"