A few years ago, a Canon exec said, "From now on, we'll be making niche cameras". At the time it was understood as a "videocentric" model at a given price point, then a "photocentric" at the same price point, with a similar pattern from the low to the high tier.
The reality is that all the niches - let's assume there is about a dozen of them from the entry level P&S and bridge to the medium pro of the FS-7/C300 MKII category, not counting the fixed lens camcorders - is occupied by a different company with only a minor overlap between them. That is a prima facie evidence in the entire industry. Canon crops and 30p's on everyone. Sony is 8-bitten. Panasonic doesn't have an APS-C camera and Fuji only has APS-C cameras. And Medium Format. With the sensor made by Sony. Which doesn't have a Medium Format camera of its own. Nikon has neither the Medium Format nor a true video camera while Olympus is relegated to the MFT size period. A free market would have every one of these niches, with heavy overlap, filled by every manufacturer. With full sensor readout, 10-bit, HEVC, pixel shifting, Quad Bayer, AI AF and so on and a smartphone type refresh cycle of half a year per model.
In other words, there is no one's turn per se. It's everyone taking their turns at bat where they are given a relatively free reign.
Side note, Canon Rumors has a wondering article by the site's proprietor about 90D only having 4K 30P video while omitting 24P. Most of the replies are in the "Canon knows best. Who am I to judge them" category.
Maybe it’s really just one big company and this is all a game.