The way I see it, the difference is the burden in not having the device. For a lot of people a smart-phone isn't necessary, but it's extremely inconvenient to g

The way I see it, the difference is the burden in not having the device. For a lot of people a smart-phone isn't necessary, but it's extremely inconvenient to go without. Whereas these devices are new, so they aren't ingrained into our culture yet. I agree with you and OP. If there was a good open-source version of either of these, I'd buy them in a heartbeat, but there's not.