Also I think it is mostly a gross oversimplification. One could make the argument that a horse and buggy manufacturer is in almost an entirely different manufacturing business than an automobile manufacturer, and thus no more qualified to launch a successful automobile manufacturing business than any upstart. Just because they compete for the same customers doesn't mean they both have the same capabilities.

I would also like more evidence that there was a higher win percentage for tire manufacturers than automobile manufacturers to support the argument that tires were the better business.