To be fair, isn't true cinema aspect ratio 1.85:1? Even at 16:9, there is still a slight compromise in what you see. I agree, 16:10 is the best compromise for mobile computing. As I see it, the move from 16:10 to 16:9 doesn't bring much value for laptops. It's either fiddling for fiddling's sake or that the manufacturers are just being cheap and standardizing their TV and computer panel production. It's probably the latter.
16:9 just sucks on a laptop.
16:9 just sucks on a laptop.