I've finished my machine, and it can make 16 widgets in 8 hours as long as I turn the crank. So I sit and turn the crank for 8 hours a day and make 16 widgets. Am I immoral yet? I just doubled my productivity for the same amount of work.
Now I pay someone to turn the crank for me. They work 8 hours and I give them 8 widgets, and I keep the other 8. They are doing the same 8 hours of work that I was doing, and I do nothing but make sure they keep turning the crank.
Am I immoral now? Why? I built the machine and I get 8 widgets a day out of it, the same amount I got when I was building them by hand. The crank turner also gets 8 widgets in 8 hours, the same amount I was producing by hand.
So the crank turner does less work for the same output, I do no work for the same output. But both of us have the same resources as my competitor who makes 8 widgets by hand.
Is it moral for the crank turner to exchange their 8 widgets for his? What about me?