Microsoft's 10K filing ….

Now we’re using Open Source as a reason for projected revenue decline. It has nothing to do with product quality or features …

Here’s an excerpt…

This Annual Report on Form 10-K contains statements that are forward-looking. These statements are based on current expectations and assumptions that are subject to risks and uncertainties. Actual results could differ materially because of issues and uncertainties such as those listed below and elsewhere in this report, which, among others, should be considered in evaluating our future financial performance.

Challenges to our Business Model. Since our inception, our business model has been based upon customers agreeing to pay a fee to license software developed and distributed by us. Under this commercial software model, software developers bear the costs of converting original ideas into software products through investments in research and development, offsetting these costs with the revenue received from the distribution of their products. We believe the commercial software model has had substantial benefits for users of software, allowing them to rely on our expertise and the expertise of other software developers that have powerful incentives to develop innovative software that is useful, reliable, and compatible with other software and hardware. In recent years, there has been a growing challenge to the commercial software model. Under the non-commercial software model, open source software produced by loosely associated groups of unpaid programmers and made available for license to end users without charge is distributed by firms at nominal cost that earn revenue on complementary services and products, without having to bear the full costs of research and development for the open source software. The most notable example of open source software is the Linux operating system. While we believe our products provide customers with significant advantages in security and productivity, and generally have a lower total cost of ownership than open source software, the popularization of the non-commercial software model continues to pose a significant challenge to our business model, including recent efforts by proponents of open source software to convince governments worldwide to mandate the use of open source software in their purchase and deployment of software products. To the extent opens source software gains increasing market acceptance, sales of our products may decline, we may have to reduce the prices we charge for our products, and revenue and operating margins may consequently decline. ”

Full 10K filing here