Wifi is such a cheap feature to implement and it does not compromise wheathersealing or structural stability of a camera at all. those, who dont need it, can switch it off.
And it is not for the facebook / instagram crowd, since they will not bother lugging around a big old mirrorslapper. It is for those photograühers who have to shell out 300 bucks for cam ranger - simply because canon refuses to put a 5 dollar wifi chip + antenna into a 2012 camera for 3 grand.
Luckily its getting cheaper to make up for canons marketing differentiation ploys ...
I think you are gravely underestimating the cost of adding WiFi. It isn't simply some chip you just buy and stuff into the camera. It has to be integrated
into the camera! It requires changes to the body design to ensure the signal can get through without requiring that the user point a specific part of the body directly at a wifi access point and without encountering interference issues (all while still complying with FCC regulations regarding RF and all that!), it requires specific design changes to integrate it into the main boards along with all the other far more critical electronics, it requires updates to firmware to ensure it can be controlled and configured appropriately, etc. Adding WiFi to a camera isn't just a "simple" $5 cost...there is the part cost, as well as the increase in manufacturing cost of the whole camera, as well as increases to firmware development and testing costs, as well as increases to testing costs (testing WiFi would be somewhat time consuming...having to enter in access point information, let it connect (and twiddle your thumbs while it does), make sure information can be transferred reliably, rinse & repeat for verification, then finally ship it. All that stuff, all those various stages of a lengthy design, manufacture, assembly and testing pipeline, add cost! Adding WiFi costs more than $5.
This is a common mistake with people asking for new features in software & web development: "Oh, but it's 'just' an extra menu item!" or "Oh, but it's 'just' an extra button!" No!
It's NEVER just an extra menu item or an extra button! You have to plan
for the new menu item, make sure
it fits into the design of the application or web site, you have to add the additional UI code and styling, then you have to add code to make it function, then you have to TEST
that code, then you have to redeploy the application. Nothing is ever
"just" as simple as a clever individual can whittle things down and make them seem
. (As a software developer of over 15 years, I swear that every company I've ever
worked for carefully hired people who had special training in the art of VASTLY OVERSIMPLIFYING
to decide what features were necessary for the ridiculously overcomplicated products they wanted to develop...
NOTHING is as simple as it "sounds". EVERYTHING is more complex when you factor in the reality of its design, development, and integration into a complete product.
You also seem to forget that TODAY, wifi and gps are becoming more common in most portable consumer devices...but that research and design on the 5D III probably started not long after the 5D II was released! That was a long time ago. It takes a long time to design new technology, and design it as well as Canon designed the 5D III and 1D X. As subtle as some of it may seem (and really, that's to Canon's credit!), there was quite a lot of new technology in those two cameras. It was probably in prototype stage a good year or so before it was released, and it was released a couple of years ago now. The 5D III is older than the 6D, which really did not need all that much R&D in the first place, as it is basically a glorified 5D II with a newer sensor, and GPS & WiFi.
It's naive to bash on the 5D III, which required some significant
redesign, much of which was probably done alongside design for the 1D X (as it inherited much of the 1D X's functionality), as some radically inferior product just because it doesn't have WiFi. In all the years I've done photography and moderated photo.stackexchange.com, or for that matter all the years I've been reading CR...WiFi NEVER even came up as the most important thing that Canon just HAD to add to the 5D III. I don't even think it was on anyone's radar to even request in the first place...certainly not before the 6D anyway. The things people were asking for with the 5D III were less noise, and better AF. Well, we got a hell of a lot less noise at high ISO with the 5D III, and the AF is mindblowingly good when compared to the 5D II AF system. Given that, Canon delivered exactly what their customers asked them to deliver...