1. They need students to justify their funding. If students stop taking their courses, they get funding decreases.
2. There are a lot of people that love SICP, and believe it should be the foundation for all computer science curriculum.
3. People pretty much agree it's important for computer science graduates, but the question is, should it be the first course? Are the concepts too hard, too soon? Does it weed too many students out too soon?
4. The industry at large is unconvinced about the benefits of Lisp dialects. They see high productivity gains with Java/C/C++/Python. And many students question why should they learn a language that doesn't advance their careers.