it was a lot more. they built an incubator called Stanford Research Park as a joint venture with Palo Alto. It gave access to students (key to any tech company, getting fresh students with new ideas and up to date knowledge), access to VC, and nice facilities for tech startups.

I don't know the exact terms of universities when it comes to founding companies but I don't see how the university can prevent you from founding a company, or demand a percentage.