Is Penalizing Microsoft Warranted? -- NPR's John McChesney reports on the arguments for and against taking new anti-trust action against Microsoft, which the Justice Department may announce today or tomorrow. Some experts say that Microsoft should not be penalized for developing a computer operating system that's become an industry standard. They worry that excessive regulation could stifle the creation of new products. Others think there's an obvious anti-trust case against Microsoft because it has used its' `natural monopoly' to crush its competitors.