From Michael G. Jacobides in Harvard Business Review:
….while some EU policies are punitive or counter-productive, the strength of opinion of pundits long on conviction and short on detail seems to ignore the real root cause of the crisis. This is that the Greek economy has become inward-looking, unproductive, incumbent-favouring, and rife with rent-seeking. They may also underestimate how Grexit would exacerbate many of the Greek pathologies at the root of the crisis.
Greece’s main problem isn’t its currency. Rather, it is that its Byzantine regulations and institutional uncertainties discourage investments and reduce competitive pressures. Grexit would further restrict available capital, shatter the fragile banking sector, and increase the investment gap, which, as McKinsey’s recent study shows, is the key issue.
Read more at Greece and Its Misguided Champions.