Labour doesn't make money until the labour is already provided, so how much money labour can produce is an unknown until hindsight is available. An established company with a stable business can make some pretty reasonable forecasts, but when it comes to startups and other new business ventures one is ultimately straight up guessing.
Demand being a function of how much investment money is available is going to be closer to reality, although that is not the whole story either.
Your compensation is dominated by the function of supply of and demand for labor, not how much the company makes from your labor.