To those that does not believe in the collaborative movements and in social networks as business drivers and supporters, see that are rising money exchange companies based on peer-to-peer models. Take a look at: http://weswap.com/.
I saw collaborative wifi at MWC 2012 - a great idea! - and there is much more about that (see e.g. http://lifestylesdefined.com/turning-homeless-people-into-wi-fi-hotspots/).
Soon we will get collaborative credit, collaborative charity, collaborative banks... and some day, who knows, collaborative government. I strongly believe in that.
All of these should be based on cloud computing, mashups and trustworthy computing models.