So let's draft 1% of the population and place them in a large underground bunker at birth. They will never be allowed to know anything about the "real world," and they will provide all the labor, engineering, and scientific research for the other 99%, who get to everything for free. Does that sound like a good society to you?
No, because this very probably wouldn't increase average happiness:
1. The 1% would be less happy.
2. Lot of the 99% would feel guilty (which lowers happiness).
3. The 1% would probably be less productive than if they were free. So the only benefit for the 99% would be that they consume less.
By the way, this system to a certain extent exist in our society (cheap labour in China for example).