Some maybe cry excess profits, while others note that maximizing profit is the norm in a free market system.

有些人可能抗议超额的利润，而其他人则指出，利润最大化是自由市场体系的准则。

This has led to worry among business investors about possible big changes to the free market system for the world's top copper producer.

这让商业投资者担心，这个全球最大铜生产国的自由市场体系可能会发生重大变化。