Because neither is ever going to say yes to this.
Let's put it this way if you are really good as your profession and someone offers you a contract saying you will only earn about 1/10 of what you are worth for a year to get paid what you are worth the next year, without that being a guarantee. Would you say yes? Let's say you should be earning $50,000 a year and someone offers you $5,000 for a year. I think most of us probably would say no.