good group of companies. See the need for a CDN that can handle television volume audiences. Symple makes a lot of sense. Basically, bill.com that doesn't suck/feel dated.
Yea, webtorrent[1] is a great project.
We've also created Sharefest[2] a while ago which is basically WeTransfer with no servers.
I think multiplayer web gaming has a nice potential and need for a high performance network stack using WebRTC.
IoT might also be a candidate for direct p2p communication, without the need for all the devices in your home/office to connect directly to the cloud.
[1] https://github.com/feross/webtorrent [2] https://sharefest.me/