"We believe that Apple, by taking the opposite approach, has taken a step that could undermine this next chapter of the web — the chapter in which mobile devices outnumber computers, any individual can be a publisher, and content is accessed anywhere and at any time."

So Apple is undermining the advancement of the web by advocating the use of HTML5 over Flash? And how is choosing to not support Flash on their platform undermining the web?

Adobe's rebuttal to Apple on all of this sounds like the movie industry: biding for relevancy when their middle-man is becoming obsolete.