The policy is pretty old at this point and there is no momentum behind changing it. It also helps curtail "hot money" (https://en.wikipedia.org/wiki/Hot_money

The policy is pretty old at this point and there is no momentum behind changing it. It also helps curtail "hot money" (https://en.wikipedia.org/wiki/Hot_money https://en.wikipedia.org/wiki/Hot_money) flows which can cause banking crises. Obviously there's the control thing you mentioned to keep elites in check.