I haven't seen a person in this thread use free in the sense of payment yet, it seems pretty disambiguous that everyone is referring to free in the sense of lib

I haven't seen a person in this thread use free in the sense of payment yet, it seems pretty disambiguous that everyone is referring to free in the sense of liberty. This includes the point the person you are responding to is trying to make, in which case they are noting that open source and source available are not the same things. Their point seems to be that open source, by the very definition to most who matter/care about the concept, implies the "free/libre/disentangled" portion. Whether that means derivative continuation (GPL and its kin) or not (MIT, BSD, etc). This is why the phrase "source available" exists.