Four Futures by Peter Frase outlines some possible futures after capitalism, with a view to automation and the effects it could have. The futures are communism, rentism, socialism, and exterminism. This review on Goodreads has some examples of sci-fi renditions of these different types of future.
Communism: Star Trek, Corey Doctorow’s Down and Out in the Magical Kingdom
Rentism: Charles Stross’ Accelerando, “Anti-Star Trek”, Warren Ellis’ Transmetropolitan
Socialism: Kim Stanley Robinson’s Pacific Edge, Mars Trilogy, 2312. Mary Shelley’s Frankenstein.
Exterminism: Blomkamp’s Elysium