I would say the injection of markets into and the commodification of all aspects of life. If imperialism is definable as the export of capital into foreign countries, neoliberalism is the parasitic financial capital scrounging upon what remains of imperialist society. Art is commodified. Social life is commodified. Even liberation is commodified. It's why television sucks and everyone has tens of thousands of dollars of debt. Its why not even "homeowners" really own their home and why corporations celebrate diversity. Its why tech giants can report massive losses and still be massively successful while we all slave away for them at jobs that aren't legally "jobs". As the rate of profit decreases, financial capital sinks its proboscis into new sources of revenue destroying what remains of society.