Why did Marc Andreessen's alma mater make efforts to see Netscape fail?

I have been reading about the history of the World Wide Web and am at a point where I am reading about the browser wars. What astonished me was that Marc Andreessen's alma mater essentially did all they could to take down their alumnus's revolutionary Netscape browser. From lawsuits to licensing the Mosaic browser with Spyglass Inc., which then enabled Microsoft to overtake the browser landscape, it was very clear they were seeking Netscape's extinction.