The first point covered, giving away your core IP, is definitely one that resonates with me. We went open core with our headless document management system (<a href="https://github.com/formkiq/formkiq-core" rel="nofollow">https://github.com/formkiq/formkiq-core</a>), and there is always a worry in the back of my mind that we are providing such a solid foundation with the open core/source components that we may be undercutting our enterprise modules.<p>But on the other hand, I don't know that we're popular enough for someone to come along and build free modules on top of our product. So maybe this isn't a problem we'd need to worry about.<p>Until it is... ??
I don't understand this "open foundation" idea. Spinnaker isn't adding subscribers for Netflix, Kubernetes isn't driving that many customers to Google Cloud, and React doesn't increase Facebook usage. And those open source projects were created long after the parent companies were already successful.