Reagan and Thatcher introduced neoliberalism into their respective countries. If you were right, it would have been pointless to vote for a center left party in the next election because they wouldn't abolish it. But when the Democrats/Labour came into power, first thing was to undo all the shit and abolish neoliberalism, right? Right?
John the Duncan made a good video about how the center left parties legitimized and normalized neoliberalism in the next legislative period. If you want me to, I can see if I find this video.