Formula 1 is a racing event for prototype cars and tyre's.
And lets question toyota's, or renaults, or honda's involvement in F1 then. I don't see them as selling cars in the same kind of league as ferrari. Hell no-one in formula 1 is a supercar maker except for ferrari. Sure bmw and mercedes and that make cars that are very sporty, but they don't make cars like ferrari, only companies like lamboghini (sp?) do.