"Who Solved the Capitalist’s Dilemma?" Capex and Market Creation ARE Correlated
From Asymco:
In The Capitalist’s Dilemma, Clayton
 Christensen and Derek van Bever introduce a powerful new theory which 
explains the relative paucity of growth in developed economies. They 
draw a causal relationship between the mis-application of capital in 
pursuit of innovation and the failure to grow.[]
In particular, they observe that capital is allocated toward the type
 of innovations which increase efficiency or performance and not toward 
those which create markets (and hence long term growth and jobs.) This 
itself is caused by a prioritization and rewarding of performance ratios
 rather than cash flows and that itself is due  to a perversion of the 
purpose of the firm.[]
For this statement of causality to be confirmed we need to observe 
whether it predicts measurable phenomena. For instance, we need to see 
whether companies which create markets apply capital toward 
market-creating innovations and whether companies which create value 
through efficiencies or performance improvements hoard abundant capital.
Over the entire global economy, the pattern of capital over-abundance is easy to see. The amount of cash or securities on balance sheets is extraordinary and unprecedented (estimated at $7 Trillion, doubling over a decade). However, growing cash is not a perfect indicator of inactivity. Cash is the by-product of earnings after
 investment. So if operating profits are growing and investment is 
growing, but not as fast, then it’s possible to grow cash while still 
growing investment.
The better measure is investment in capital equipment or, more specifically, purchases of plant, property and equipment.[] Indeed, on a global scale, capital expenditure as a percent of sales is at a 22-year low. 
CapEx is a good proxy for non-financial “investment”. It’s also a 
measure that can be easily obtained as companies report this activity in
 their Cash Flow Statements....MORE