You forgot one more thing. From CRT to LCD, it was like a DOWNGRADE from 30 inch to 15 inch. What's happening now is more like an UPGRADE from 50 inch to 105 inch.
However, the most important factor here is you haven't seen really curved panels yet. Flat means flat. It means just flat. Flat panel technology needed to be flat but different flat panels had different depths and different weights. Curve means a variety of angles and directions. It needs not literally mean a globe-like curve.