This is why liberal economics are such a conservative force. Their hide moral arguments by embedding them in a loop: "this how things are, there are some good things, so how things are is good". Then they also use the argument the other way around and in the end, there is no way to bring up the possibility of change or challenging the status quo: "What? You don't like how things are? Poor thing, cheer up! Maybe you are not trying hard enough?". The underlying truth is that how things are is good for them and the capitalists that fund them. Then they will rationalize whatever excuse to pretend that it is also good for the rest of us.