Bingo! :-) Adobe knows how to piss of 3rd party developers.
But it's actually not that simple. You can't just convert everything to HTML 5 and be "happy". If you want to support older creative suite versions (CS6 / CS5) you additionally have to build it in AS3 / FLEX since they don't support the new HTML 5 technology.
Double strike, pain in the *** for all of us, at least for the next 2 years until everybody converted to the new CC philosophy.
The problem for me was/is: We payed a subcontractor 40k to build a plugin, since I didn´t had the time to do it myself. Try to imagine the face of my CEO when I told him, that this 40k were spent to cover the next 5-8 month and until then, we have to completely rebuild it. Awesome.