While I'm not sure bitshares has the right formula in entirety to pull this off for mass public consumption (there are problems I have with the "dividend"/"Smart Contract" system here and would prefer something closer to what Ethereum is working on), the DPOS consensus mechanism is great for this because A) It will sell artists (who tend to be more environmentally conscious) on the fact that it's green and B) It will be able to keep up with the pace of what a torrent network will demand on the blockchain due to the scalability and speed offered. In order to achieve what he wants, you need 1. Accountability for who "owns" that file that is being distributed 2. A system of smart contracts integrated into the platform set up to exchange bitcoin and 3. A blockchain that will track who is downloading/streaming said file so that funds can be distributed accordingly. Without these, it cannot happen.