How Do You Manage to Pay Your Employees With Open Source?

So we actually developed like the NX open source, Marley Portoula as our 20% time. We give it for free so people can try it out and play around with it. But then for companies which usually need on-prem installations of that because they want to have the data in their own kind of like infrastructure and local cloud services,. That's when we charge actually, right? So that's when we, when they either just use it and pay for it or we come even in helping them set it up.