Why no references manager

I know that there are hundreds of add on products for Word that manage references. But why does a product that have a gazillion different typefaces and three thousand ways to create mailing lists have no mechanism to manage academic citations?

Word supports Tables of Authorities for the legal profession and has done for years. It would be a trivial matter to provide support for academic citations, merely a change of formatting. But this has not happened.

Microsoft aggressively markets a student and teacher version of Office. Yet this lacks the most basic feature students and academics need.