So many "open core" projects are really crippleware. The open core business model just makes too much of an incentive to make core functionality proprietary. I guess one nice thing is you could fork the open-source version and add the "business/enterprise" features to it yourself. I'm sure that would earn you the ire of the company that makes said software though. I'd love to see the pull request to add such features to the open source version. Would you get a response like "The PR looks great, but it doesn't align with our business model, so we'll have to reject it."?