For me "easy to use video on the Internet" always was a direct link to a file that I can download just like any file, and play in my media player of choice just like any other video file. Flash never worked so well; it only ever caused grief for its crashes, slowness, security problems, nonportability, compatibility issues, etc. So far HTML5 hasn't worked much better.
I don't see how flash moved the web forward, it certainly didn't do so for me as a user. Maybe it did for the guys upstream who would rather have control over all my access to their data, instead of letting me just download it and do what I want with it.