100 years ago, Ford did not have 100% of the market share. The wealthy did own cars and those manufacturers tried to strong arm Henry Ford into pricing cars so only the rich could own one. Henry knew that if you lower the cost and make less profit, more people will buy and you will sell more and end up making more money. By making more money, you can hire more people and sell more cars.
Another interesting twist is that in 2003, Ford wanted to build 100 Model A Fords to sell for $100,000.00 each. They had all 100 sold. Because they were a 2003 model, they were not allowed to sell them because they did not have ABS, Air Bags, impact crumple zones, etc.
Tom