For a very extreme take on this, you should read Ian M. Bank's Culture series. The AI's have progressed to true sentience and run mind-bogglingly massive space ships which can hold billions of people. At this point, the ships truly are in control of the civilization and yet the humans are OK with it. There is no money and no need for humans to work as ships/drones/avatars/dumb robots do all the real work - wether it's turning raw materials into actual goods or taking care of all the tiny but important things necessary to an advanced, space faring society. I've found it to be a fascinating idea, so perhaps you will too?