It doesn't matter if they don't run well on street. My point is they will generate the interest and the sale for the first time buyer. Ta-05/T2R/Cyclone S are still at a budget suitable for the beginner.
Track prowess is moot, if you are thinking about how a pancar will handle better than a TC then you've already commited to racing at least on an occasional lvl. Which means you are drawn into the RC scene and want try race onroad. The whole idea is pancar most likely draw from someone who's already into RC, which is a pool much smaller than what a TC has to work with.