Advancing an economic agenda to a leftists is a losing proposition. They are about the social control, and personal policy agenda, and economics are a distant 10th or something. There is no connect between economics and social programs, and there hasn't been since 1932 with the 'new deal'. Because FDR brought the US out of the depression with massive, and huge spending programs, that type of thinking has only gained traction with the left. The term 'free market' is like nuclear fuel to the libs. Nothing can be allowed to be free. It must be controlled, shaped, formed, regulated, and come from the govt. Frex; see Net Neutrality. The most insidious control mechanism since the Patriot act.
FDR did not bring the US out of the depression with his programs, that's a progressive revisionary history in action. What brought the US out of the depression was WW2.
In fact had FDR left it alone the US would have emerged from the Great Depression in about two years, but because of his socialist progressive agenda and economic engineering the US wallowed in the depression for almost a decade.