> What if we only send keyframes?

I think the author reached this conclusion, but individual jpegs is essentially only keyframes.

> We don’t spam HTTP requests for individual frames like it’s 2009.

Uncompressed frames are huge, somewhere between 5 MB and 50 MB. The overhead of a request is negligible. It's also different when you're optimizing for latency and reliability where dropped frames is OK. Really, the lesson is they should have tried the easy thing first to see how good it was.