The question of the sedan market dying out came up on the Taurus Club a while back, with similar results "I want you to make what I want". Well, my stepmother put it well in 2012. She had a 2009 Ford Focus that she and my dad had bought for her brand new in 2009. "I can't put anything in the trunk!". My 2004 Focus was the same. The cars had a good sized trunk - deep, wide, and long. BUT, you couldn't fit anything substantial into the trunk because the opening was so small. On a square, the opening to the 2004's trunk was probably 18 inches by 12 inches (height x length - bumper to rear window). The trunk itself was 24 inches deep by 36 inches long (back bumper to back seat). In theory, you could fit a 27 inch tube TV, in the box, in the trunk, IF you could get it through the opening (which you can't).
Now, there were four things I liked about my Focus. It was comfortable. It was fuel efficient. It handled well. And, it had the features I wanted. BUT, I couldn't fit anything big in the trunk. Compare that, now, to my Fit. It got better fuel economy, handled like a go-kart, had the features I wanted, AND, I could fit large stuff in the trunk/hatch.
Ford really shot the sedan market in the foot. To get better gas mileage, they smoothed out the lines, and shrank the trunk opening, rendering the trunk useless. Of course, people like me who want to be able to put bigger stuff in the trunk, have moved to CUVs, hatchbacks......