A better analogy is airplanes and air travel. An even better analogy is that the companies that build airplanes also build cars. They have a decent margin on c

A better analogy is airplanes and air travel. An even better analogy is that the companies that build airplanes also build cars. They have a decent margin on cars but a much lower margin on airplanes. So, even if they could make planes that were larger and faster, they profit more from keeping people driving their cars.