That was always the secret to McDonald's success.

There were plenty of hamburger joints along America's roadways when McDonald's started. But what McDonald's did is to provide a consistent experience.

The food may or may not not have been as good, but you knew exactly what to expect, which was a massive improvement over the way it was before when the price, quality, service and other things varied widely.

I heard a program about it on the radio several decades ago, and there's an entire economic theory about it, and it's the basis of modern franchising.