Music: Supply and Demand

Why does anyone buy music albums any more? One suggestion:

Music is in a post capitalist environment, and totally uncharted territory for any commodity. There is no scarcity of music, and the supply outstrips the demand by miles. When people buy an album, they are saying "I like this music or artist enough to support them. I want them to continue to make great music, and I am moved and touched by what they create."

Will magazines be following suit soon?