Before such conclusion, one should try to define which music, books or art we are talking about and than we should establish the context of such discussion. Of course, it is up to any individual to choose how it will relate to such things, but I would not agree that all ’music, books and art’ might be considered as an ’enterteiment’, or at least, some are not created to be observed as such.
Than again, there is a story when W.Blake met than young Constable when he was just finishing one of his paintings. Blake, amezed, said that painting is an inspiration, but Constable answered that he believe that is a landscape...