I thought the debate is settled. It doesn’t matter whether you have a bank based fin system or a market based fin system. What matters is how effective and efficient they are. Anyone can do the job. In other words financial structure does not matter.
This new paper from Asli Demirguc-Kunt, Erik Feyen and Ross Levine argues differently (many more papers on fin systems here) (HT: All Finance Blog):
In this new paper they say fin structure does matter. Infact countries should shift towards market based system as they grow.






