People can make web apps that communicate with each other without paying for servers - hobbyists, students, developers in third world countries etc. Collaboration tools focused on local or niche things, text / video chat, multiplayer games, etc.
WebRTC can communicate on the near network without roundtrip to ISP uplink, so it can get high bandwidth in managed environments (industrial etc).
WebRTC can communicate on the near network without roundtrip to ISP uplink, so it can get high bandwidth in managed environments (industrial etc).