Licences are sold to a customer directly therefore it is illegal to sell it on and as said breaches the EULA and agreement (Terms and Condtions) when it was purchased. You know the thing that you have to accept before downloading stuff from the sites that no one ever reads...

When Uni buys the software they buy it for the Uni and not who is going to use it and when its installed the loop whole is it get installed for "Any Authorised User" and "Bigtime 3D Teaching School" as the Organisation. This means the Uni buys 30 cpoies of Student Edition (to save cash) and they can install it on to 30 random machines. The minute they breach the 30 limit they will owe Autodesk money or will be in breach of th T's&C's they agreed to at purchase.

When a person buys the software, part of the agreement on purchase is that the software is not sold on. As the licence only covers the pruchaser and no one else.