Somebody: In all likelihood, capitalism will be replaced not by the working class, which scarcely exists as a class-for-itself, and is organically incapable of ruling a society without immediately raising before it a new bureaucratic caste, but by new technology. Capitalism without the industrial revolution would have led to a Malthusian cul-de-sac.
We can't expect socialism without a massive technological revolution to provide the foundation for universal abundance. Things like desktop manufacturing and 3D printing, nanotechnology, and regenerative medicine are more likely to foster a transition from capitalism than reading the Grundrisse or starting worker's councils.