Uh Canon already does this.
The 1DXII is a 20.2 MP camera that costs $5,500. It was released in Feb 2016. In August of 2016 Canon released the 5D MKIV...a 30mp body that shares a lot with the 1dXII including the same AF system, but costs $3,800.
Are 1DXII users insulted by this? No because while the 1DXII and 5DIV have a lot of similarities, the 1DXII excels in areas very specific to pro sports and wildlife photography, and there are people that are willing to pay for those capabilities.
Same deal with the a9 and a7III.
you forgot wedding photographers who demand and use the 1Dx2
It has the best AF on the market. I got the camera at release and have captured about 60+ weddings with it. I have yet to miss a processional shot. Its a bulletproof camera for wedding photographers and the file size is perfect
OK now i feel better