Also the industries aren't comparable directly on revenue numbers. Walmart had net sales of $340 million but the net income after tax was $11 million. That's

Also the industries aren't comparable directly on revenue numbers. Walmart had net sales of $340 million but the net income after tax was $11 million. That's a very low margin business compared to software, where a typical result might be $55 million in revenue to make $11 million. http://walmartstores.com/Media/Investors/1976AR.pdf http://walmartstores.com/Media/Investors/1976AR.pdf