Musicians and film production companies need to start acting more like tech startups. Bootstrap, find an audience (traction), raise funding to pay for production costs (friends, family, fools, or kickstarter.com), distribute in iTunes or elsewhere, make money from digital downloads.
You could create a tech startup to sell user generated digital content and give back 100% of revenues to the artists. Got a great idea for a film? Find investors, gather the talent, shoot it, and sell it online. Forget about Hollywood.
Hacking new ways to distribute user generated digital content is only one part of the solution. iTunes and Youtube already exist for garage bands and film school students to bypass the entertainment industry to sell their work. And most of it is terrible.
Technology companies could take an active role in financing the production of quality digital content. Invest $20k into 10-12 artists to seed an album or film leaving enough upside for the company to get back a return.