> Torrents provide a lot of this funcitonality Plenty of companies have tried to build peer-to-peer CDNs (including Bittorrent, Inc. itself). They have all fai

> Torrents provide a lot of this funcitonality Plenty of companies have tried to build peer-to-peer CDNs (including Bittorrent, Inc. itself). They have all failed. P2P doesn't work well on mobile, ISPs get super upset about seeding from residential connections (and often use boxes to traffic shape it), there is no programatic way to determine if even a residential line is on a pay-per-use plan, and in general consumers don't like you using "their bandwidth."