If we started to allow some of these countries to see the consequence of their governance, perhaps we would see significantly better governance. This has as much to do with investors as it does with the governments and multilateral organizations that enable them.
This could make sense if you're talking about currency arbitrage, but investing in entire sectors of a nation is different from trading tenths of a cent of a dollar.
Well, given the words "all of these crises" ... you tell me, do they?
Investors learn that the best bets are betting on being too big to fail, or being risky as possible to get a massive short term profit and then retiring. (Or alternatively, being hired to clean up the mess you made ala Geithner)
These are human beings working for corporations. They have limited liability. They get no benefit by being safe, but have all the incentive in the world to do stupid things that will make several million in bonuses today.