Well now that you mention it. I was considering buying a 1 seater, open wheeled, carbon fibre, 700hp car for my daily commute...
With a small capacity turbo charged engine, possibly even with hybrid power and batteries that is possibly made by a team racing in F1, has a seat, steering wheel and four wheels?
F1 is so expensive for manufacturers these days that they need some R&D to fall back on and to appease the board, some of which may only have sanctioned F1 by two or three votes. Sure if the sport was much cheaper then we could consider going to a cheaper engine, but I suspect the manufacturers would still want something technologically advanced so they can do at least some R&D while racing.