This is only a personal anecdote, I had two occasions to use it at work:
- I wanted to setup ssh access to some machines in a complicated network in a shared office, over which I had no control. After trying various NAT traversal hacks, I realized the potential of WebRTC to do all that for me, and setup ssh over webrtc. I made it from a bunch of hacks, but some people seem to have built that properly now, ex: https://github.com/mxseba/rtc-ssh
- I built some tech demos that needed to run on multiple OS and use the webcam. Initially I relied on opencv, but I needed to dockerize things and outside of Linux the webcam device passthrough is a pain. Instead I made a simple webpage fetching the video feed and talking to a python backend (using this great library: https://github.com/aiortc/aiortc), and it worked nicely. It also has been surprisingly easy to setup.