The solution is to have the majority of countries, or at least those with the bulk of the money, blackball those countries who try to low ball everything. Additionally, to write their tax codes such that corps in their own country who try to avoid taxes still have to pay. The goal at the end is that each country would have a roughly equal chance to attract companies, and a framework for taxation of multi-nationals can also be achieved and be somewhat equitable. I agree that it should be a world wide leveling. But it also means nailing the cheapest bastards. Because that hurts the corporations that take advantage of the cheapest bastards you have to go after both the countries and the corporations. And given that most politicians are paid more by the corporations than by the countries, it is unfortunately highly unlikely to happen.