I totally agree that neoliberal economics are essentially what we understand to be economics now. To be clear, I'm not blaming the left, I think it's a case of they have a more difficult message to convey. To explain the problems that neoliberal economics has and to propose a solution to them is a really hard task compared with "it's the foreigners at fault". It's a much clearer, more concise and seemingly solvable problem compared with "we need to overhaul the global economy".