Indeed I could, but I much rather hire two co-workers and cut my salary is three pieces and give them one piece each, if it would come to that. Life's more than money and people jump on the chance to do something they find is meaningful.
You might feel that way but remember how much profit tech companies make. I know of small companies that make millions in profit and don't pay their staff even competitive rates. Diverting a bit more of that profit into someones salary seems fine to me. The example here is Gumroad which is very profitable.