Lol; look at Linux and Windows
People use Windows and pay for it because its better. Look at Free Web Hosting and Normal Web Hosting; people pay for it because its better. Library and Buying Books, Downloading and Buying DVDs, Free Housing and Normal Housing, Free Editions of Programs and Pay Editions of Programs...
Things that cost aren't naturally worse
They are generally better and worth it. You do afterall get what you pay for.