It's the Open Core business model that is becoming the standard Open Source business model these days. Wikipedia even has a nice little list of companies that use the same business model:
https://en.wikipedia.org/wiki/Open-core_model
It's not EEE. The open core makes it so that the last step in EEE doesn't work. With an open core, anyone can fork.
It's not EEE. The open core makes it so that the last step in EEE doesn't work. With an open core, anyone can fork.