Exactly right. I don't get why this is so hard to understand...As someone else on the thread posited, the video portions are largely software related....
And if nothing else, the higher video is likely pushing the hardware so that still photo capabilities are going to be pulled along with it.
Having a stills only camera, for such a niche market, would likely lose the volume sales that help a hybrid camera over time...and make your stills only camera more $$$ since they'd not be selling as many.
And again, as someone else mentioned, the aftermarket for a crippled stills only camera in this day in age would likely be zilch.