OpenStack is an open and scalable cloud operating system for building public and private clouds. It provides both large and small organizations an alternative to closed cloud environments, reducing the risk of lock-in associated with proprietary platforms.
It's a low price compared to other solution providers and any other licensing options in the market.
You were using the free version of OpenStack. You didn't have the license for it.
I use it as an open-source tool.
The solution is free to use.