These examples are not used to imply that it should the way you suggest they do. They are used as an example to show, that one day if you want to run a business requiring advanced technical platform available for free, you can do it thanks to FreeBSD and you can be as successful as these companies. Not only these commercial products use it, but also many free/open projects and non profit companies, and if that doesn't open your heart and wallet, then I don't know what would, if at the same time you're OK paying for products ;)