Yes, there are several examples of companies that have successfully benefited from providing only open-source software. Here are a few notable examples:

1. Red Hat: Red Hat is a leading provider of open-source software solutions, including the Red Hat Enterprise Linux operating system, OpenShift container platform, and more. They have built a successful business model around providing open-source software and related services, such as consulting, training, and support.

2. WordPress: WordPress is an open-source content management system (CMS) that powers a significant portion of the web. While WordPress itself is free to use and modify, there is a thriving ecosystem of companies that offer related products and services, such as hosting, themes, and plugins.

3. Mozilla: Mozilla is a non-profit organization that produces the open-source Firefox web browser, as well as other open-source software projects such as Thunderbird email client, and the Rust programming language. Mozilla's mission is to promote openness, innovation, and participation on the internet.

4. MySQL: MySQL is an open-source relational database management system that has been widely used for many years. The company that originally developed MySQL was acquired by Sun Microsystems, which was then acquired by Oracle. Today, MySQL is still available as open-source software, but there is also a commercial version with additional features and support available from Oracle.

5. Apache Software Foundation: The Apache Software Foundation is a non-profit organization that provides support and resources for numerous open-source software projects, including the Apache web server, Hadoop big data processing framework, and many more. Many companies and organizations rely on Apache software to power their operations, and the ASF provides a community-driven development model that encourages innovation and collaboration.

These are just a few examples of companies that have successfully benefited from providing only open-source software. There are many more out there, and the trend towards open-source software is likely to continue to grow as more companies recognize the benefits of openness, collaboration, and community-driven development.
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