Capital succeeds because it runs on critique. It produces dissent, and dissent therewith produces more capital. A final stage capitalist society would be entirely leftist & organized around a continual critique of capital.
The forces of capital capture, repurpose and recycle dissent and authentic experience. Think about the memes we enjoyed in 2010 being on 2018's boomer mugs. The same is gonna happen to any movement which relies on dissent against capital.