Coincidence vs. Causality

The other good point that The Law Talking Guy makes is that coincidence does not imply causality. RbR's argument, if I may summarize, says "one-dimensional economies are not democracies, therefore one-dimensional economies cause a country to not be a democracy." What if I told you that more people die of tuberculosis in Arizona than any other state? (which, last I checked, was true) The quick and easy conclusion to draw is that the climate in Arizona is somehow bad for tuberculosis, when in fact the very opposite is true.
I think we need to take in to account the other possible factors here, such as geography, religion, history, economic sanctions, etc. before we can come to a conclusion on this one.