Your question is a complex one. I fully agree with you as to what might be called the international hegemony of the English language. That is the case in the field of science, just as it is everywhere else. How can a university allow that to happen? Well, first of all, academic freedom means that university teachers can produce material in the language of their choice. I am not sure you wanted to address that, but is an issue in itself.
On April 2nd, 2009. See this statement in context.