Another, huge in fact, reason is that we ask them to do a lot more. Just the framebuffer for one of my displays uses more memory than a computer that was very

Another, huge in fact, reason is that we ask them to do a lot more. Just the framebuffer for one of my displays uses more memory than a computer that was very usable for all sorts of tasks back in 1998. Rendering UI to it also takes a lot more resources because of that.