Reality is it is sort of mixed. For the OSS company actually building the product, you end up playing whack-a-mole in that anyone can spin up a competitor over the weekend. Look at what happened with Docker. They completely changed the landscape of running code locally and in production and was run out of town. Everyone and their dog took the code and re-packaged it and competed with Docker. Then compare that with VMware, they completely changed the landscape of running code locally and in production but they were able to protect that value and thrive as a company. There is definitely a lesson in there.
Sure, maybe this is a feature but if you're about to launch an open source sales model company you probably need to think really hard about that idea.