The Radeon Pro Duo is in Titan X price range. No sane gamer buys those. I draw a line at ~$600.
Yes, but it creates this illusion that everything they sell is the best. The 1080 is now the fastest graphics card, but I can't afford one so I'll buy the GTX 960. JoeSixPack will blindly buy it without looking at benchmarks. This is what happened back when Nvidia sold the Geforce 4 MX, and consumers thought it was a slower but cheaper Geforce 4 Ti. They just go by name. This is also why consumers are confused about memory size on a graphics card. I know a lot of individuals who think the memory is how you determine the fastest graphics card, and only the memory.Being the fastest is important because the average Joe buys whatever is sold by the company that sells the best. People don't know anything about computers, they know that CPUs are made by Intel and that the GeForce cards are supposed to be good.
The people in this thread are far more informed than the typical graphics card buyer. Probably more people lurk this forum for info, than actually post. Which is better, the R9 380 or GTX 960? Never mind, the 1080 is the fastest, I'll buy the 960. That is the power of having the fastest GPU on the market, up to ~$600. That and the 1080/1070 cards get far more publicity than a 1060 or 1050 would get.