Has there ever been a business with significant commercial success that designed a peer to peer architecture to serve as the foundation of it's technology or IP?

I can only think of one, that being Skype. Of course that doesn't mean Peer5 can't do it, and I sincerely hope they do because I always root for entrepreneurs.

However there seems to be this weird disconnect between p2p architectures and profitable companies, even though the theory is so powerful. I can only guess as to why:

- The illegal stuff has somehow unfairly tarnished public opinion

- It's too low level and is only suitable for standards like WebRTC where lots of people buy in at once to provide enough momentum

- It's not easy to do right