Except, the BDA owns the rights to blu-ray and not Sony. And if you were to want to make a blu-ray player and needed the licenses and patents you would actually seek out the BD4C Licensing Group; which consists of Mitsubishi, Thomson, Toshiba and Warner Bros.
Microsoft is also expanding pretty quickly, over the past three or so years they've announced several pieces of technology that they are making themselves. With the company itself increasing it's server software, putting out cellphone OS, building their own tablets, as well as picking up Skype.







