With its first EOS R iteration, Canon sent out a clear message: "We're maybe hopping a bit behind but this is what the future has to bring". Especially with the new RF mount and lenses, they were spot on and it looks promising. This first model was certainly not what some might have expected of it (me included) but it was good and advanced enough to convince not only new Canon customers but quite some enthusiasts and (semi-)professionals to give it a shot and more over to be amazed by the lenses and some of some features of the EOS R. In my opinion Canon will for now follow the money as suggested in the article and will release some sort of "lower value" entry level model (the original EOS R being a "higher value"entry level) to expand the R and RF system client base. A high level pro R "flagship" model(1Dx equivalent) will and should by all means take much more time to be developed, tested and released to make sure it will have the most advanced and fine-tuned mirrorless technology available BUT.... I think that some might share my opinion when I say that Canon should and should really not wait too long to release an "all-round" Pro R model (between entry level and a high level Flagship model), shaped at the level of the 5DIV and 5Ds(r) and aimed at the serious enthusiast and professionals, looking to adding an equivalent mirrorless to pair up with their existing DSLR 's and/or to replace some DSLR's all together. This body should by all means be aiming at becoming a true Sony competitor or at least be the model that puts Canon completely on track on the mirrorless market, which unfortunately is not the case yet. Features that should be included in this all-round Pro model: Double card slots, IBIS, higher FPS (on all levels - but not as high as current 1Dx), 45+ MegaPix sensor, better DR, non cropped 4K video, improved ergonomics with at least a joystick of some sort or an improved version of the touch bar. Features such a more advanced body with integrated battery grip, even higher FPS, higher MegaPix, 8(K vid?), completely redesigned AF system, some new features, should be kept for the high level Pro model to be released as the last iteration of their mirrorless offer.
Of course this is what I'd like to see and what make sense in my opinion but I'm sure Canon has already planned out their path and offer for the next 3 to 4 years to come.... and good that we don't know too much about it otherwise it would completely spoil the fun of CR and this forum, wouldn't it?
.....
Time will tell, I guess.....