Fortunately, Canon makes many cameras. It is pretty clear that Canon thinks their target market for the 1Dx and now R3 will be satisfied with 20-24 MPs and are purchasing these cameras for reasons other than higher MPs.

So, the real question is if Canon sees a large enough market for a 1D like body with a high MP sensor. We'll see. For your and several others I have heard talk about it, I hope so. To a very large extent, let's hope the R3 is spec'd well enough to be the "R" replacement for the current market that the 1Dx has targeted, which likely includes the price point. If it is, Canon is more likely to turn the R1 into an all-around beast with high MP.

As for Sony, they've done a great job in terms of grabbing market share over the last 5-10 yrs. What's interesting, is that it has not been at Canon's expense. So, each manufacturer has had a strategy, and, really, both have worked well.