Microsoft's 2015 reminds me of Sun's 2004 - open sourcing software in a desperate attempt to remain relevant as Linux grows. In truth Microsoft hasn't open sourced Office, Windows, SQL Server etc. which they make money from, but only bits which they think might save them from irrelevance amongst developers in the era of Linux and the cloud. As much as MS made a song and dance about open source the vast majority of MS profits are still from proprietary software.