Information Goods Need Not Be Natural Monopolies

For example, Red Hat Enterprise Linux
- A distribution of GNU/Linux sold by the Red Hat company. (GNU/Linux is an operating system of approximately the same power as Microsoft Windows or Apple Mac OS X. Linux is the preferred operating system for supercomputers and many Internet services, but lags Windows and Mac on workstation applications.)
But you can get the exact same software via free download from the Centos distribution (minus the Red Hat name and some logos).
Red Hat knows there are many equivalent products, not just Centos. Red Hat sells "software as a service".
- Upgrades, virus protection, consulting, bug fixes
It does not need to compete with Centos or other Linux distributions on the software itself. Its versions are newer, and automatically upgraded. That is the value to their customers.