Others would like to be paid for that work too, and are willing to accept less if the current occupants of those positions won't.
Which sets up a downward spiral of wages. If I’m making $10 an hour, you fire me and hire someone for $7, what’s to stop you from firing them and hire someone for $6? Where is the floor for wages? I mean... I don’t like cops in the least. But why should we continually accept doing the same work for less and less money?