I am not really sure why you would think this since mind share effects ever industry around. Sorry but, Nvidia often works on mind share, even if their particular card is better or not. Also, I agree with the person that spoke of the cards that were available on shelf at Best Buy and up until now, nothing really good was available. (Used to be you could get 4890's but that was then.)
Ever since the big box stores like Compusa went out of business, finding cards in a local store on shelves is difficult. I can walk in a buy a 1070 or 1080 right now, if I wanted too but I could never buy a Fury or Fury X, ever.
It has a limited effect, and we can see that with market share figures.
And guess what, the buyers for big retail companies knows what sells off the shelves, that is why they are buying Pascal. Fury was a bad selling card period, you can't tell me it would have sold if it was on the shelf. Online sales tells us that. Market share figures tells us that. OEM's buy products that help their bottom line and sell, we can see that in Dell, HP, Lenovo, what graphics cards they put into their system? More systems have nV cards or more types of nV cards than AMD. Simple, they know they will sell and it drops the cost of their systems with power and dissipating the heat.
You can't tell me people don't look into things like these because they do. Why do you think Fiji is an option now in some HP/Dell systems (started in the past quarter and half)? Because AMD is giving them away, even though they don't hold a candle to Pascal....