A lot of points here but basically I was responding to the claim that an iPad is ready to take on these tasks. As you point out, it is not.
I think you'll find that a Windows PC used in an industrial environment may cost thousands and isn't going to be replaced without good reason. Also, apps rebuilt from the ground up lose a lot of functionality and take years to get it back. This is the case right in the Apple ecosystem.
On the bright side, I do see iPads being leveraged more and more. Just look at what it has done to POS for small businesses.
On the not so bright side, it's a little depressing to hear people say the vast majority of the population is basically computer illiterate. The US is going to continue to get trounced if this is really true. People should be doing more and more with computers, finding better ways to do things and synthesizing new knowledge. I want to hear that the iPad can do more to meet people's needs, not people's needs are so minimal that an iPad will do just fine.
Enjoyed reading your thoughts.