In aristocratic societies, rich people used to commission exquisite paintings for their walls.
New Wave art was the rage of the eighties. Now it's exhibited in oldies-but-goodies museums, usually in black-and-pink frames.
Many people decorate their homes with designer graffiti, even though most of them would probably have real graffiti scoured off the walls of their buildings.
Commercial art is traditionally delivered to a client in a brown-paper bag with an invoice stapled to the outside.
