This works great if you measure value in terms of dollars spent per hour, but most people don't. I don't pay the mechanic to fix my car because it is cheaper t

This works great if you measure value in terms of dollars spent per hour, but most people don't. I don't pay the mechanic to fix my car because it is cheaper than doing it myself, I pay the mechanic to do it because I don't want to do it myself. I have the means to avoid doing many things I don't enjoy by paying others to do it. If someone has a job they don't enjoy AND they have the ability to choose how many hours they work then your system would probably work, but most jobs have requirements for hours per week anyway so those hours are spent either way. After that you have to maximize the enjoyment value of the time you have free.