Paying your own employees enough for them to buy your product is the perpetual motion machine of business models in the sense that it doesn't actually work. You need other sources of revenue to survive.
Cars used to be luxury goods and the idea of common people like factory workers driving cars absolutely blew people's minds, even if they were the best paid factory workers. The majority of Ford's innovation here was in reducing the cost of manufacturing rather than by paying his workers more. Another point is that assembly line work can be alienating, and being able to own the finished product is probably a decent remedy for that type of alienation.
Cars used to be luxury goods and the idea of common people like factory workers driving cars absolutely blew people's minds, even if they were the best paid factory workers. The majority of Ford's innovation here was in reducing the cost of manufacturing rather than by paying his workers more. Another point is that assembly line work can be alienating, and being able to own the finished product is probably a decent remedy for that type of alienation.