This is true, but I think we also see a lot of Windows issues that have no obvious gain for Microsoft, to the extent that it definitely seems like incompetence is a common source for issues over malfeasance. It is possible Microsoft is vastly smarter than I give them credit and has carefully buried their malfeasance in their incompetence, but I don't think we have any evidence of nearly that much cleverness on Microsoft's part any time recently. ;)