What is limiting is, to rely on a smart phone to do computing. A vast majority of the phones is locked down and steering people away from general computing ability. Can you do whatever you want on your phone? No. Not with the usual OS on them. Need to root it, jailbreak it, whatever. Then you have a phone with a bad input device. Yes you can improve it with something like hacker keyboard and whatever, but it is far far from being productive like a normal computer.

I am aware more and more people only use smart phones and don't own a general computer any longer, but that is a really sad development. A smart phone will usually not encourage experimentation and getting into general computing. It is a dumbed down device.

Yes, one should be able to use a phone for computing, but generally that's not available out of the box and it takes effort to make it somewhat OK to use it for computing.