Quite. But if you make a contract with me (in the US) you wouldn't be able to blow it off under cover of Australian law, is what I mean. So if Elsevier's contract terms are legal in their (Elsevier's) domicile, people who enter into contracts with them need to keep that in mind - which is why most contracts have a 'choice of law' provision saying which laws will govern the enforcability of the contract in the event of a subsequent dispute.