WHY SHOULDN’T GM MAKE MORE OF WHAT PEOPLE WANT AND FEWER OF WHAT THEY DON’T WANT?

Amid all the yelling about General Motors’ announcement that it will discontinue manufacturing several passenger car models, I thought it was interesting that the Antiplanner brought up the point that passenger cars haven’t always been configured the way they are today.  He points out that pre-1950 passenger cars were more like today’s SUVs in that they had a higher H-point (a term that I had never seen before but that refers to the height of a vehicle’s seating relative to the floor of the vehicle and the road surface).  
My guess is that the lower passenger car design that became prevalent in the 1950s was largely a function of aerodynamics, but that’s just a guess.  I think the point is that there’s nothing sacrosanct about the way that cars are designed today.  If car buyers prefer a different design, why shouldn’t the manufacturers respond accordingly?