All open-source companies close-source some code, or else they struggle, because services don't scale. Red Hat's security layer is not open-source. Cloudera is an explicitly open-core company. So is my startup, Skymind.[1][2] There's no other way to do it. But there is a way to be honest about it, and I think sytse is being honest. You can't give it all away for free. If you do, you're probably not a company...