I disagree; what you're talking about would be an issue in today's world but if someone were to come out with a way to re-use a personal computing device (phone today, maybe something else in the future) so that you could have multiple visualizations with it to the point that you would never need to buy another dedicated device again, I think you'd eventually finding that picking up enough traction that it would be everywhere. I mean, why not? Similar to wifi which is pretty much everywhere now.

Ultimately I don't know if it'll be the phone that powers this or if it just simply takes so long that it'll be something else but I would be shocked and supremely disappointed if, by the time I pass, there isn't a way to quickly and easily view your digital information on any screen with or without keyboards in multiple layouts that best fit the screen and purpose.