Earlier quoted context omitted.
Lots of nice games to keep alive. Video playback can be done via WebGL shaders, just like rendering video on the good old days with SIMD. And most important, why not? Someone will eventually do it, there are already JVM and CLR ongoing ports.
There is even an ActionScript to Javascript __piler https://as3js.org/
That, as far as I'm aware, is why Shumway died.