Richard Stallman, founder of the Free Software Foundation published an interesting article on BBC news website. From the article:
To pay so much attention to Bill Gates' retirement is missing the point. What really matters is not Gates, nor Microsoft, but the unethical system of restrictions that Microsoft, like many other software companies, imposes on its customers. But Gates didn't invent proprietary software, and thousands of other companies do the same thing. It's wrong, no matter who does it.
Microsoft, Apple, Adobe, and the rest, offer you software that gives them power over you. A change in executives or companies is not important. What we need to change is this system.
That's what the free software movement is all about. "Free" refers to freedom: we write and publish software that users are free to share and modify.