I think you’ve missed the point. Cars replaced horses - it wasn’t cars+horses that won. Computers replaced humans as the best chess players, not computers with human oversight. If successful, the end state is full automation because it’s strictly superhuman and scales way more easily.
Humans still play chess and horses are still around as a species.
(Disclaimer: this is me trying to be optimistic in a very grim and depressing situation)
Unless the state of the art has advanced, it was the case that grandmasters playing with computer assistance ("centaur chess") played better than either computers or humans alone.
Perhaps you have missed the essential point. Who drives the cars? It's not the horses, is it? And a chess computer is just as unlikely to start a game of chess on its own as a horse is to put on its harness and pull a plow across a field. I'm not entirely sure what impact all this will have on the job market, but your comparisons are flawed.
> Computers replaced humans as the best chess players
Computers can't play chess.
> Computers replaced humans as the best chess players, not computers with human oversight.
Oh? I sat down for a game of chess against a computer and it never showed up. I was certain it didn't show up because computers are unable to without human oversight, but tell me why I'm wrong.