The problem is that they also need to distinguish it from the higher memory and much more expensive Quadro line. For instance, the new Quadro P6000 comes with 24GB and it'll run you $5500.
Yeah I can see that, but they're running into the other problem now where 12GB is just not that much more than 11GB and certainly not worth the 100% price increase. At 16GB they would at least be offering ~50% more memory.
https://www.newegg.com/Product/Product.aspx?Item=N82E1681413...
If you're doing memory intensive stuff, NVIDIA wants you to spend a whole lot more.