I saw this in a recent issue of Economist. You can click on the graphic to go to the article. Anyway, the good ol’ USA ranks 7th, which is horrible.
The rankings are based on criteria such as institutions, infrastructure, financial systems, flexible labour markets, economic stability, innovations and public services. Plotting the scores against GDP per person reveals an unsurprising correlation: competitiveness brings wealth, but rich countries can most easily afford to provide the conditions for it.