I want to know the answer to this question as well; my university purposefully blocks non-authorized networks.
University Wi-Fi blocking is usually targeted at APs that students have attached to University network drops without permission, which is a completely different thing.
However, the FCC did not appear to draw a distinction, which is interesting.
At my university, the wireless APs would scan for others and try to detect if they were on-network using a student's auth. They'd tell the student to remove the AP if they wanted to continue to have access to the school network. Wireless, off-network hotspots were allowed, provided they weren't impersonating the school network.