[COLOR=royalblue]At the root of the problem for Microsoft is the challenge open-source software presents to its traditional business model—which is based on customers paying to license its software. Under this commercial software development model, software developers bear the costs of creating the software but receive license payments for its use.
But the open-source movement has turned that model on its head. Now, software is produced by global communities of programmers, with the resulting software and intellectual property licensed to end users at little or no cost, the filing said.[/COLOR]