I would have thought that law - or laws - is/are public documents and have to be public, else how can you be expected to have reasonable knowledge of them ?
I agree that not everybody requires, for example, a detailed knowledge of the Petroleum Regulations but the knowledge should be freely available to those who do need it. But the laws of a country or state should be freely available for public study and scrutiny.
And as for the argument that why should an institute make its regulations available for free, it is their duty to create these regulations and publish them. And if an element of financial compensation is needed to enable this duty to be carried out then it falls to the State to supply this. Such documents have the nature of a 'public good' and access to them should not be impeded by considerations of copyright or intellectual property, epecially if done either at the behest of the State or if essentially paid for by the State.