Sorry for the following negative response, but your analogy that hardware purchases directly correlate to productivity increases sounds like deductive reasoning gone mad. This is not to say there is no correlation, but its strictly to point out that your question when asked from a more insightful perspective is much more likely to result in an accurate answer. Our biggest concern should be the social issues such a rate of change is likely to bring forth to the rest of the world. This is a real problem that will need to be addressed.
Productivity takes on New Face.