Canon and Nikon DSLRs are fine machines, both up the state of the art incrementally with each new model.
I heartily encourage those that are dissatisfied with the current rate of improvement to the state of the art to fully develop, manufacture and market a better product.
Why, when Fujifilm, Panasonic, Olympus, Sony and even Samsung are doing such a great job.
While you are at it, it better be 100% PERFECT for EVERYONE at all times under all conditions.
Why this requirement, when both Canon and Nikon aren't.
That requirement is for whiners that complain about the current state of affairs. As I posted, I wholeheartedly encourage such whiners to do a better job, their success, or lack of, can then be evaluated according to the volume, or lack of volume, of whining complaints regarding features, options, capabilities, ergonomics, image quality, DR, burst rate etc..
In other words, you want to First World Whine and Complain? Fine,go ahead, then put your money where your mouth is. Otherwise, STFU and learn to appreciate just how marvelous and capable modern cameras are.
To paraphrase Robert Capa who said;
"If your photographs aren't good enough, you're not close enough."
If your camera is not good enough for you, your wallet isn't empty enough, you need more gear.
As I recall, back in the days of film and manual focus regarding top line cameras, Nikon was pretty much tops, Canon a close second, Pentax a distant third.
Somewhere along the line to the present, Canon and Nikon switched positions, Pentax lost the way.
There is enough distinct and superior about Canon's products that the marketplace, that'd be us, has put Canon on top, a position they've earned.
Even Scott Kelby has finally figured it out.
Nikon has some glass, yes.
But Nikon offshores a lot of its manufacturing, really just builds bodies and has some involvement in EXPEED development, then stuffs a Sony sensor inside and calls it good enough.
I just looked for the 'Made in' labels on my Nikon and Canon gear, here's what I found;
Two Nikon bodies and one lens Made in Thailand, one lens from China, one Speedlight made in Japan. A Nikon mount Tamron lens Made in Japan.
One Canon body, two (identical) Speedlights, one lens, one flash remote all made in Japan, pancake 40 made in Malaysia.
Canon proudly offers a fairly complete, comprehensive and very competent system, they build where they live (mostly~).
You mention Fujifilm, Panasonic, Olympus, Sony and even Samsung, you forgot Pentax.
Seriously? None of them even begin to approach the market space that is Canon's, not even close. They are much more mass market devices, decidedly down market.
Whatever FF offerings there may be that attempt, or appear to attempt, entering the Canon defined market space, I've no interest in cobbling together those with various aftermarket goodies, then show up with a cobbled set to a high dollar wedding assignment, corporate client or studio portrait shoot.
Reminds me of the day I was at some scenic spot with my 6D, guy shooting with his phone tells me he can do anything with his phone that I can do with my 6D. Oh please, just stop. Same guy probably believes Earth is only 4K years old, just ignorant.
To answer Kai's question, remember? The topic of this thread?
Canon is very much on top of their game, at a peak of their prime. It's Canon's game. They've established the rules of the game and excel, Nikon puppies along behind.
Fujifilm, Panasonic, Olympus, Sony and even Samsung, Mark Zuckerberg loves ya!
All that ^^ said, I'd still like to see Canon and Nikon come out with cameras that incorporate a fully integrated smart phone, I think there's a Samsung in that direction, an Android Galaxy Camera, doesn't look to be a phone though, not all that camera wise either.