The OpenScholar software is open source and available on GitHub. People and schools are welcome to install and manage their own version of OpenScholar.
Saying this, one of the reasons OpenScholar lifted out of Harvard to become its own company is because schools struggle to do this on their own. Schools need a small team of people to manage this open source software. OpenScholar (the company) provides the software itself plus cloud hosting, system administration and security. We also provide theming, online documentation, video tutorials and help desk support for our clients.