Wordpress is open source and powers a fifth of the internet web blogs and shops. It's proof that something can be a very mainstream consumer product while retaining the lightweight open source customization spirit seen in things like Linux. And yet WP has a huge amount paid customization options, great for devs and end users.<p>Your opinion?
Linux is not quite so anti-commercial as people make it out to be. Many contributions that go into the kernel come from paid developers working at the behest of a company, and there are companies offering support contracts and services for Linux.