MongoDB and Elastic are successful because they are locking features behind a paid license. Does that make it a successful open source company?

GitLab has features in the Enterprise edition that aren’t in the Community edition don’t they?

Yeah, I wasn't trying to say GitHub is different. Instead, this shows a route to profitability for these companies.

Correct.

But GitLab is the same concept...

I meant there were no successful public companies based on open source except RedHat in 2015.