Instead of trying to comply with Flash, FLOSS community should rather try and create something new and unique which have the same functionality. I am not sure exactly what HTML5 will be able to do (except playing videos and audio), but I think Flash has better functionality. And that is a negative thing. I am looking forward to when the Flash "era" is over.
I have been reading a bit about these "Telepresence" robots that can be controlled and streamed through a website with Flash installed, is this something that HTML5 could also achieve?