I would even be willing to bet that Canon could add new 4k features and functionality to the 1D X and 5D III as well, if the time comes that consumers really demand it.
If I were a videographer right now, using either the 1DX or the 5D3 since their respective availability, and Canon releases firmware updates enabling 4K recording with these cameras, then ...
- it would mean that the camera was capable of this functionality right from the start, but Canon chose to "cripple" the camera for some obscure and probably financial reason; and
- I'd have serious doubts about ever using Canon products again.
But, hey, that's just silly old me!
Are you being serious? I mean, if this is what gets you to jump ship, then you might as well jump ship now. When the 1D X and 5D III reached the final stages of testing (i.e. pre-release field testing, which was at least six months before their announcements), 4k playback in consumer devices was just a distant blip on the radar. There were only a couple high end 4k TVs, and they cost between $60,000 and $80,000. There was pretty much no 4k content at all, bluray or othewise. There weren't even those interim upscaling players that Dilbert is such a big fan of.
So, your saying that because Canon was not EXCEPTIONALLY EARLY to the 4k game, so early in fact that they might have had a grand total of 10 consumers who would have benefited from their addition of full 4k recording to their new cameras, your going to head STRAIT for the same, tired old "Canon is holding back and screwing over their customers!" and "I'm gonna leave them forever!" arguments? Seriously?
Or are you just playing one of your inane games where you pretend to play some role, without indicating as much, and expect abstract readers on the internet to "sense" that your being "sarcastic"?