Forbes has a great article on the music business: How the Music Industry is Putting Itself Out of Business.
If people aren't willing to pay for the music that they love to listen to, it won't be long before that music disappears.
The reason is that without meaningful changes to the way musicians get compensated, creativity will suffer immeasurably – and with it, the entire music industry. Consider that the revenue streams created by record sales and concerts once formed an informal infrastructure that continually bred new artists. Without such revenue streams in place – or something similar to replace them – the time will come when musicians will have no practical way to stay afloat, forcing them to give up and many would-be ones never to try at all.