Bjorne
I think the issue is the complexity and cost of obtaining and setting up an AS.
While delegating this to the ISP/university who routes the 44net to the radio interface point. It is common to lease IP addresses to users in the commercial world. Those leases could be revoked by AMPR if the user is not using the space or not using it per the TOUA. AMPR could simply issue a letter to the ISP directing them to terminate the AS entries.
Lin