The problem isn't that games are not FP, it's that for games, 32-bit precision is good enough, and for most problems actually way more than they need.

I already mentioned why that wasn't feasible. I'm pretty much stuck paying $100 extra on each card in exchange for my predecessors' "free" CUDA lessons.

My point isn't that the economic tradeoff mentioned by the sales rep doesn't exist, my point is that the tradeoff can't be responsible for a price grade as steep as the one we see NVIDIA use. The real answer as to why they price-grade so heavily is "because they can" -- not that I would expect a sales rep to be honest about it.