Hello, just signed up.
I use DSLRs for video (and specific types of photography), mainly the Rebel line. I recently switched to Nikon because I got sharper and more DR in my video. At first I regretted this decision because of the terrible design of Nikon, but after I refined my workflow, I now produce better video than I ever did with Canon (but the 80D looks very attractive, but not for 2016/2017).
My thoughts on Canon are as follows:
Back when the DSLR for video making revolution started, a lot of people invested heavily into Canon DSLRs and lenses. How could you not switch to a camera that offered better image quality (especially in low light), at a much lower price point, with more flexibility and allowed you to use a variety of specialty lenses? Yes, there are drawbacks, but they were easily overcome by those who were determined to do so. Canon kept releasing better DSLRs with improved video features and of course Magic Lantern expanded that even further!
But today, when 4K is something that all video makers have either switched to, or are in the process of switching, or will be in the near future (1 or 2 years at most, depends on the region of the world), how can you release a camera that is expected to have a market lifetime of 3 or 4 years without 4K? Does Canon expect to release an updated model to this camera within 1 or 2 years or release another model that might obsolete this camera?
I suppose Canon expects all their video users to move into their Cinema line, but this is unrealistic. Someone who buys a $5,000.00 USD DSLR every 3 or 4 years, is most likely not making enough to invest in a $11,000.00 USD camera in that same time period (unless they're business is growing fast enough that they can justify moving into that line). Raising prices to make this possible is most likely disastrous for anyone's business. In short, it's becoming unsustainable to buy Canon when clients expect 4k footage or 1080p footage from a 4k source (because downscaled footage is usually higher in quality than 1080p source).
Canon video users are a captive client base, but some of them have told me they fully intend to switch to another brand as soon as they have saved up enough. Most likely, when this starts to happen, Canon will catch on and release a whole bunch of new cameras with 4k video. Some people who were thinking about switching will remain, other who switched won't switch back. At the end, Canon's client base shrinks, and they will probably start the process all over again.
As for me, I'm going to save money and see what options we have by the middle of 2017 or 2018.