Actually I would avoid peer to peer technology, as that takes a large group of peers to work well, and you can end up with practically orphaned content if it's not popular and there's no peers for it. Maybe the latter is a solved issue with new P2P networks, I haven't torrented in years.

The other part of avoiding peer to peer is to ensure there's money in it for hosting and advertising. I hate to be cynical, but for companies to play along and join in, there has to be money in it.