This doesn't take into account much in the way of risk. Really, those that take the most financial and legal risk (e.g. if the company goes under, who's on the

This doesn't take into account much in the way of risk. Really, those that take the most financial and legal risk (e.g. if the company goes under, who's on the line), should have significant impact on equity. Part-time vs. full-time does cover some risk.