It's still just a market. You've got to make offers that people will accept. It's mostly silly to try to come up with some objective theory of value, except in the context of what potential employees will consider to be fair, which is right back at "you've got to make offers that people will accept."

Basing compensation on supposedly objective things like "the dollar amount a sales person brought in" might be important to a given pool of potential employees, but resist the temptation to think of it as objectively determining the value of the employee's work. Remember that all you're doing is making offers that people will accept.

I agree. But if employees know their objective value I believe it will change what they will consider an acceptable offer.