The price of the bitcoin is unstable, a month can go up to 50% but could drop by up to 50%, it is very risky for the corruptor to save money because there is no money opportunities bitcoin runs out.
As far as I can judge about what is happening in each country, regardless of the social level of the inhabitants, corruption is present everywhere and everywhere. But it's worth remembering about very interesting qualities in Bitcoin which in turn can not be eradicated, but rather promote corruption.