That's a different business model from trying to sell the software itself. Plenty of consultants make a living doing integration work. They don't claim to be in

That's a different business model from trying to sell the software itself. Plenty of consultants make a living doing integration work. They don't claim to be in the business of selling FOSS software, though. Another model is selling an enterprise-grade release that builds atop the FOSS version, but with closed-source features and support. This is the model that nginx (now F5) and haproxy use.