This isn’t really true. See: Ford Maverick.

CARB only nudges manufacturers, but the market’s own purchase preferences are doing the big push.

Perhaps the biggest nudge is that gasoline is undertaxed. Consumers will never see a reason to stop driving a 18-25mpg truck when gas being less than $5 a gallon is considered a “high” price. The gas tax hasn’t kept up with inflation.

I don’t love the ford F-150 for being a monster truck, but consider this: with the right configuration it sears 6 adults comfortably, plus having a bed for cargo. Families legitimately replace minivans and other family vehicles with it, plus it can tow and haul being the body on frame truck that it is.