Users. Users always talk that they would love to pay. The problem is, they never do. They blog and write on forums about what they would like to see, but the things they write are always very, very different from what they actually do, according to the data. You remember how in this whole Reddit debacle Pao said that "most of users don't really care about this scandal" and got downvoted to hell? It could very well be…
Auto enthusiast site commenters claiming "If Manufacturer A would build this car with X motor, Y drivetrain, and at Z price, I'd totally buy that!" or "If only Manufacturer B would bring Car XYZ to the US it would be a huge hit!"
If history is any indicator, no, those types of vehicles will not sell well. Recently I've seen the discussion around the Chevrolet SS (Holden import), because while on paper it's on par with other performance sedans, it's selling very poorly. Granted, it had low expectations by GM, but it's just an example of this mentality / vocal minority over-inflating their self-importance in the grand scheme of things.