> We have better chances of collapsing capitalism from within.

Isn't that what Marx says? Capitalism is unstable and collapses from within. He identifies socialism as the next stage (seizing the means of production) that then leads to communism (fully distributed ownership and no real state).

We may of course disagree that these stages are what would actually happen. So far when the state seizes the means of production, it becomes highly authoritarian and doesn't want to relinqish power and move towards actual communism.