It's way past time for any sane person to let such a statement go unchallenged, on the spot. (How the hell we get MSM "journalists" into that group is another of our big problems...)
Here's one possible response:
"Economic benefit" for whom? People who don't have enough to eat, or clean drinking water? People who can't find a decent job? People who don't have health insurance? People who are in trouble because they can't afford a lawyer? What you are saying is all wrong.
What you are saying is that squeezing the life out of the people at the bottom makes the economy run better. That's factually wrong, and let's talk about how morally wrong it is. Let's talk about how you damn sure wouldn't want to be treated that way yourself.
"Misallocation of resources!" What you are leaving out is how badly that has already been done. And yet (in the words of the great John Fogerty) all you can say is "More, More, More!"
You are a mental failure. A moral failure. A sociopath. You have no legitimate standing to wage the class warfare you are escalating. A freak opportunity to pull the Orange Blob's puppet strings has befallen you and you intend to strike. Like a snake. Like Helen Caldicott's "reptilian midbrain" characterization of Dick Cheney.
What's your endgame, Mick?
"Let them eat cake?"