"Microsoft is resisting the trend to open-source software development, in part because its entire Windows revenue stream could dwindle to a trickle if it did so. If Microsoft began building Windows with open-source software, competitors like IBM and Novell might be able to sell Windows to their customers without having to pay royalties to Microsoft. 'The open-source business model is the one trend Microsoft can't follow,' says Edward Jung, co-founder of Intellectual Ventures and a former senior software architect at Microsoft. Microsoft's need to preserve its enormous on-going Windows revenue is a burden that other companies don’t have..."