It's important to note that smaller cars tend towards the hatchback form factor because it maximises the space yielded from a set footprint, whilst a sedan offers less usable space and so isn't a body style which can be easily applied to such cars without deterring buyers.
Sedan culture in the US is very likely a weird byproduct of so many different factors, it is tough to pick out any one particular idea as a primary cause. I think the most straightforward one is of styling, where a lot of people
seem to prefer the lines of a sedan versus that of a hatchback. Part of that probably comes from the wagon revolt in the '70s and '80s, as tastes shifted towards SUVs and minivans. I think there's also an argument to be made for a lot of people almost always having the "second car," whether it belonging to their spouse, or the truck/SUV that's used on the weekend for going camping/boating/etc. The Jetta/Bora has almost always outsold the Golf here, and that kind of market has pushed many-a-brand to slap together sedan versions of world cars like the Fiesta and Mazda 2 to satisfy American tastes.
It doesn't make us right, it doesn't make the rest of the world wrong, but it seems to be changing. I see more Focus and Fiesta hatchbacks compared to the sedan, sales of the Mazda 3 hatch have been stronger as of late, and it has forced GM to bring over the Cruze Hatch for this generation. I think young people appreciate the practicality of the design and layout, eliminating the need for a second "weekend car," and arguably better styling in many efforts these days.
With regards to the Verano, at one time I quite liked this car. That was before I found out that it was essentially an Astra, a car which is middling at best.
The Astra shouldn't make headlines here, but, it does. A good chassis is a good chassis, and sold as a Buick, it works quite well. That D2XX chassis should be pretty good as a replacement, should they do it. But, I wouldn't expect actual driving dynamics any time soon. If you want a fun "luxury" compact, I think the Honda Civic Touring is the way to go.