At Microsoft, because they sell that stuff and it would be really bad for their image if they insisted they work better by not using it.

(Or, rather, I have no idea how this compares with the image of they actually not delivering because they use it. But that's a next quarter problem.)

At every other place where management is strongly pushing it, I honestly have no idea. It makes zero sense for management to do that everywhere, yet management is doing that everywhere.