If they were limited to one nation, they would seek the same goal. If they were not corporations but instead partnerships, joint ventures, agencies of banks, trusts, or sole proprietorships they would still seek the same goal. Business's goal is not chosen by the managers or the owners. The goal is imposed by society's reliance on the practice of starting productive activity by investing money in the expectation of getting more money back. Any manager or owner who does not accept the need for profit will not last.
Governments can regulate business up to a point.
If they regulate business so much that it becomes unprofitable, they destroy the object they seek to regulate. If a world government were to regulate the multi-national corporations, it would not be more severe than New York City is in its regulation of taxicabs. To make the world work for humanity we need to mobilize resources to meet needs. Regulating MNC's is certainly desirable, but it is an illusion to think that it will solve the world's main problems.