Museums are trying to figure out what to do about 'net art. Art in Technological Times. As reviewed in this space earlier, the Biennial consisted merely of a paragraph of text, with a link to each of the featured artists.
More traditional art is, of course, conceptually much easier to deal with.
Paintings and sculptures are singular objects which have a tangible physical existence. All of these functions are changed by technology, especially digital technology, and museums have always taken time to adjust when a new technology is introduced. It was more than a hundred years since the advent of photography that it was taken seriously by the museums, though it seems that they are trying to adjust to digital technology much more quickly. You can only see Velazquez s Las Meninas in one place. Museums can choose what to show from their permanent collection, limited by the space of their galleries, or to lend out works to other institutions, in which case they are unavailable at their own.