Is this about what economists call "opportunity cost"? If I work all year and make £15,000 profit (regardless of whether I extract some or all of it from my business) then I'm missing the "opportunity" of earning a wage doing something else: working for Elaine, for example, where I might command a large salary on account of my dynamic handshake.
A hairdresser client owned the freehold on his salon, but profits were consistently low at around £10k per annum. When it sank in that he was working for around £5 an hour, he closed shop and got a job earning double that. So opportunity cost was £20k. In fact he now rents out his shop for £10k pa, so I guess he was really working for nothing (and the true opportunity cost was £30k). On the down-side, Yours Truly now has to pay for his haircuts.