In fairness, there's little practical benefit (and, in fact, a lot of downsides) to a supercar whereas a plane that does trans-oceanic in half the time is useful--of course, if you can build it, and sell tickets economically for maybe today's business class prices--keeping in mind that a lot of people flying business are doing so on upgrades/miles.

...and yet, despite your lamentations, Lamborghini operates a profitable business.