You clearly have not read Capital and haven't a clue. For one, Marx contemplated a modern world with no religion. Islam is a peasant based fuedal system and as far from modernity as you can get. Marx characterised capitalism as a radical system that uplifts the world from the hereditary privilege of fuedal orders to meritocracy. Islam is centred aroung an Arab elite and is essentially a religion based and land based empire.

The Soviet intelligensia realised that they jumped the gun in foisting communism on a peasant society. Capitalism will globalise, dragging the last parochial barbarian into modernity as it establishes itself and it will then run its course. No one can bring it down as long as it has capacity to expand. The current unrest in the Arab empire exemplifies their own struggle as capitalism forces them to adapt to the demands of modernity.

Capitalism has many decades yet. Anyone who suggest otherwise is a fool. Anyone who suggests that peasant based Islam has the capacity to lead capitalism is also a fool.

It pays to try and educate yourself rather than spout garbage.