Nothing new.. If i can replace a security guard of my office for a cheaper more efficient, less error prone, robot/software instead of a human for half the price, WHY NOT! The exact same philosophy goes into "software is eating the world".
It works until you run out of consumers with cash, at which point it no longer works.
Everything is still based on the same capitalism we have now, and the ~20% of people who work will still be able to make income (meaning there will still be incentive for enterprise).