<<So, either he earned it fair and square (and you helped determine that it was worth it) or, if it's as you claimed that he essentially ripped you off for that, then you are implying that he should be a slave to your needs.>>
I guess what you're really saying is that value in intangibles that can't be re-traded (like the "satisfaction" derived from eating in a fine restaurant) is purely subjective. If the customer was willing to pay $2K for $100 worth of food and labour, then by any and every standard of measurement, the value of a meal in that restaurant to that individual, is $1,900.
Looked at that way, it IS a win-win transaction. The restaurant provided this one specific customer with $100 worth of food and labour plus $1,900 of enjoyment - - for which he paid $2,000. He got what he paid for and the owner got paid for what he provided.
Had the restaurant been owned and operated by a worker collective, it could have taken in the same $2,000.00, the workers would have all been paid their wages, the suppliers would all have been paid AND the rest of the $2K remaining (the profit margin) would have been shared by the workers who cooked the food, served it and cleaned up after. Instead of ONE GUY taking all the profits, they would have been shared by the entire staff. THAT'S the way to go.