I started programming on a computer that can be comfortably be emulated cycle exact on the cheapest tablets you can get today, so that's quite obvious hyperbole.
At my first company, we did most of our development work on a server that was shared between four of us, yet had 1/4 of the memory of my tablet, and which was about 1/10th the performance of current generation ARM's. Somehow had no problem doing programming work on it. As well as running paint programs (granted, none of us did much graphical design, but what little we did ran on that shared server using our local, much slower, machines as X terminals).
My "IDE" today is, as it was 17 years ago, Emacs. It hasn't gotten that much more resource intensive. My browser has gotten more resource intensive, but still runs ok on a device like that.
> How does the convenient form factor help you beat the competition? Working off hours? No thanks.
It helps me not having to drag a laptop around and/or rush to find a full size computer when server I have responsibility for go down. It gives peace of mind. And yes, I am very well compensated for being the one who gets the calls if something breaks, as well as the freedom to put in the resources to minimize how often it does.
It's also extremely convenient when travelling, such as when I'm heading out to one of our data centres.
It's the text that's an issue, which I solve by using a keyboard when I'm working (and that I leave behind when I'm not).