Or... what if the next big thing is the phone becomes the computer, i.e. there will be no laptops? Imagine a device that you can connect to some peripherals including a monitor (possibly with its own GPU), then you undock it, put it in your pocket and move on to the next place - your home or your work with peripherals ready to use.
Today it seems impossible or hard to build but I think the bottleneck here is not even the hardware as much as it's software. But that's a long conversation. Just an idea (kind of an obvious one) I wanted to share.