Back when it was 90% junk, 5% okay, 4% great... But also that 1% that was absolutely worth it.
Back when Schwarzenegger and T-Pain were basically the highlights. Victoria running the AMAs - I mean that had to be one of the biggest losses. That bird scientist dude and then the drama after he was caught alt upvoting.
WebRTC could be used to provide peer-to-peer streaming. The load on the servers would be very minimal since the feeds would be sent directly from the host to the viewers. A lot of live streaming and video conferencing apps already use it to keep their hosting costs down.
The downside is that the IP address of the viewers will be exposed, even over a VPN unless precautions are taken by the user or the application.