A sole consumer of labor is a monopsony, not a monopoly (that would be a union). At any rate, the point is that there are many many employment negotiations that no reasonable person would agree to amount to duress. This is a counterexample to the idea that any negotiation of employment involves duress. I don't need to disprove the existence of any coercive employment. But SaaS companies are especially relevant since pg specializes in showing people how to become billionaires through SaaS. If earning a billion dollars implies some measure of coercion we should be able to find that in a SaaS startup.