Enterprise distributions and free software

I take issue with this definition of lock-in, which is one I've never heard before. Red Hat doesn't do anything to the OS or to the customer to make it harder for the customer to move, we simply make it harder for competitors to support Red Hat software. Now if you're a business person and you say, "We could move to vendor X for Enterprise Linux support, but their support is not as good as Red Hat", I could see how that might make it "hard to move", but that isn't lock-in.