Well, that's not so clear cut. Many manufacturers report that for models which are offered in both sedan and hatchback forms, the hatchback forms are actually very popular and often exceed the sales of the sedan version. Also, when you consider how popular SUV's and crossovers are (now exceeding sedans) and that most of these are essentially hatchbacks in form or function... it's a little odd to keep saying that most Americans don't like the utility of hatchbacks.
First, as stopcrazypp pointed out, SUVs/CUVs are not considered hatchback, they are in a different market segment all together.
And if you look at the sales number, it is very clear cut.
In 2014 in US, 35.5% sales are sedans, 5.5% hatchbacks, 1.2% wagons, 36.5% SUVs/CUVs.
Can't get any more clear cut as that.
Can you give me some examples of which hatchback forms outsells the sedan versions? I can't think of any.
On the contrary, I can give you tons of example of the opposite like Golf vs Jetta.
And I have been hearing over and over again about what don't you like about utility of hatchback, or what is there to lose etc.
Surprisingly, utility is not the number 1 concern when people buy cars, actually, it's not even in the top 10!
10 Top Reasons Why People Buy Specific Cars
Utility and practicality not in the top 10 for 2015 survey.
And 1/3 of the buyer won't consider the car if they don't like the exterior styling.
If everyone worries about utility, no one would be buying coupe and convertible versions - you get less room, less cargo space, less rear passenger room but yet, you are charged more for the car.