That's not quite true. What is true is that the only Fords people in North America were buying were pickups, SUVs, and crossovers, so Ford stopped bothering with cars in North America.

However, there's still people buying cars, but usually they're foreign makes. The American carmakers have spent decades trying to prove to people that they suck at making cars and only put their effort into trucks/SUVs, and American car buyers are finally getting the message.