You /might/ replace 'unfair' with 'immoral'. Lots of things in life are unfair and are just a part of life, so there's a mentality that unfairness is just a part of life. Hopefully those who wish to take from those who work can see that this is theft and theft is immoral.
Productivity per worker-hour goes up as technology progresses. It's okay to take some of that increase away and use it on other people. It's a mutually beneficial setup between you and society.