Ubuntu Pro is a subscription offering for Ubuntu users who want to pay for the assurance of getting quick and high-quality security updates for Ubuntu. I tested it out to see how it works in practice, and to evaluate how well it works as a commercial open source service model for Linux.\n
If you want technical support, of course you do. Just because a code is open source does not mean it should be free. Developers need to eat too. Another issue is that there are distributions such as ZorinOS that charge money for the right to use a pro version, when in reality it is the same version that you can configure yourself and that ZorinOS belongs to a company, not a user community.