Business warfare?  If you mean competition, then I don't see the problem.  If not, then I'm not sure what you're talking about.

Well, wars between countries are also a form of competition, you surely can think of more than that.

After retiring from service, Butler became a popular speaker at meetings organized by veterans, communists, pacifists and church groups in the 1930s. Butler came forward to the U.S. Congress in 1934 to report that a proposed coup had been plotted by wealthy industrialists to overthrow the government of President Franklin D. Roosevelt.