What are the possible ways to monetize open source software? * support or training. RedHat seems to have cracked this, other large companies struggle to make i

What are the possible ways to monetize open source software? * support or training. RedHat seems to have cracked this, other large companies struggle to make it work. * building an SaaS around it. That seems to work only if no other large player attempts the same * proprietary extensions (whether you call it "open core" or not). * getting sponsored for adding features (doesn't seem to scale all that well) I have no moral objections to any of those. And then there are things like OTRS AG delaying the release of their own source code, to make the SaaS offering more attractive compared to self-hosting, which kinda annoys me (mostly because it means they can't really accept user-contributed features in a meaningful way).