If I’d asked my customers what they wanted, they would have said, “a faster horse”. — Henry Ford
There’s no evidence that he said it. Quote Investigator has an excellent post sorting out who said similar things. The Henry Ford Museum disavows it.
If you pay attention to the quote, “Ford” is saying that he didn’t ask his customers what they wanted, because he made an assumption about what they’d say. That doesn’t seem clever. That seems arrogant.
The other thing that’s in the quote, is the idea that Ford had customers before he had a product. Customers are people who’ve bought a product. People who are potential customers are simply “the market”. But before the Model T, there wasn’t a market for an inexpensive car because there was no such thing as an inexpensive car. The Model T initially sold for $825 when the cheapest other contemporary cars sold for between $2000 and $3000. Even at that price, a lot of people couldn’t afford a car. Ford payed his employees double the going rate so they could afford to buy the product they produced.
That is, Ford couldn’t have asked his customers what they wanted, because he invented them.