""It is becoming fairly rare to find a company whose software is not predominantly open-source software," he said. "Relying on the proprietary IP rights granted by your own authorship implies that you believe your contributions to be of such high value that the cost of maintaining a private fork of your non-shared contributions outstrips the ease of integration of the developments of all of your competitors and users who are collaborating in an open community.""<p>sure because windows, office, exchange, oracle and SAP are all open now.