I think the assumption is that the company is in growth mode, spending all their revenues on staff to build the company, generating zero profit. The ~$200K sum

I think the assumption is that the company is in growth mode, spending all their revenues on staff to build the company, generating zero profit. The ~$200K sum is approximately the loaded cost per employee. Well-funded companies have extra money to spend so they'll have more people than their revenues would indicate, which is simulated by dividing their revenues by a lower cost per employee. (Conversely for poorly funded companies...)