If we extrapolate out an exponential trend from forty years ago, a quadrillion seems like it might be about right. If I'm doing my math correctly, it is only about $100k value/person. Companies will soon be doing $1 trillion in annual revenue, so an 1000x multiplier doesn't seem out of question.
I guess my question is: what needs to be done to realize, operate, and maintain the enormous potential? But, maybe it is just something that happens as a result of the changes?