They can't prevent you, because that would violate the GPL. However I'd say getting your subscription revoked as a penalty means it is not 'allowed'. The inten

They can't prevent you, because that would violate the GPL. However I'd say getting your subscription revoked as a penalty means it is not 'allowed'. The intent of the GPL to allow distribution to third parties seems pretty clear, and a company refusing to deal with you after you exercised a right explicitly granted by the licence definitely seems like a 'dick move', despite being legal.