Right, but that's cause Adobe sucks at building software. But they do have the ability to deploy updates that actually reach consumers in a timely fashion, massively faster than any W3 spec or browser vendor can even dream of pushing something through.
Everything Adobe, Microsoft, Unity etc push to their own platforms between HTML5 and HTML6 is stuff that HTML5 doesn't have and can't include until the next release beyond fragmented and browser-specific implementations.
Industry leading is not the same as perfect. They get a lot of stuff right, they make some fantastic innovations, I love AS3 and make most of my income from building games in Flash.
Everything Adobe, Microsoft, Unity etc push to their own platforms between HTML5 and HTML6 is stuff that HTML5 doesn't have and can't include until the next release beyond fragmented and browser-specific implementations.