Hi Dan!
Interesting article, but the economic analysis focuses too much on non-economic factors, and especially, lacks the monetary and financial factors.
It’s not that innovation has slowed down, it’s that the debt burden is such that priority is given towards servicing debt rather than on innovation and investments.
I really encourage you to get familiar with the work of Steve Keen.
This video summarizes the whole problem and looks at just one factor to explain the stagnation we are in, but one which has much more hard evidence behind it (data, statistics, correlation etc) rather than “soft” evidence where you can explain things making logical links.
If you watch it, let me know what you thought, and then perhaps we can discuss the way “out” of this situation, which is where I think the most interesting parts lie, as the solutions proposed by Steve Keen or other economists are rather temporary solutions and don’t question the fundamental premise of a debt based monetary system. :-)