The reason Flash is being phased out isn't because of Steve Job, or HTML5. It's down to sheer incompetence and a severe lack of understanding regarding the Internet from Adobe.
In its day, Flash was an incredible piece of software. It allowed us to embed games, music and effectively ended the problems of video codecs on the web. It was the go to plugin for anything multimedia.
Quite frankly, I don't know how Adobe has managed to survive as long as it has done. I can only assume that the only thing keeping the company from falling into the ground is Photoshop.
Adobe has no respect for those who choose to design the web with its products, even though I'm willing to bet that nowadays most people who buy it are working with the web in some capacity. They also couldn't care less about code, otherwise they would have seriously revamped Dreamweaver and HomeSite, and would never have even dreamed of coming up with Flash to HTML5 converters or Adobe Muse. Any company that tries to market a $100 a year tool to build terrible, inaccessible, bloated Frankenstein-esque websites using Muse deserves to fail, badly.
I very rarely say this, but I have no confidence in Adobe being able to pull Flash out of the wreckage and turn it into a viable multimedia tool, absolutely none. Unless they get taken over by a Microsoft or a Google I think that the problems reach far further than Flash or PDF. I'm still dreaming of a company that can release a viable Web Design tool that will knock Photoshop off its ill-gained perch and bring Adobe to its knees.