Hardware is still constrained by compromise. If I want a screen for movies with a battery that lasts and doesn't burn my leg when it's in my pocket, I give up a physical keyboard and nice speakers and a bigass physical camera lens.

The physical device that is best for me is probably the best car compromise for several million other people.

if my ex calls and I want my glass brick to flash the "help me" in SOS on the screen, play Hector Berlioz, and dim all the lights in the room – I can have that. I don't have to want the same thing a million other people do.