It's far from 'obvious' that it's not better, since shady banks are more easily targeted by national governments and raise the cost of capital for unscrupulous entrepreneurs, making such enterprises riskier and less profitable. At least, that's how capitalism is supposed to work.

Nice it's not practical for everyone to travel to a region to protest environmental degradation that indirectly affects many more people, perhaps you could could turn your abilities to coming up with a more effective scheme of action.