People who say "labor will shift" tend to have a significant overlap with the people who say "one day AGI will do all the work for us so we can live in paradise"; which, in turn, has significant overlap with the people who don't spend nearly as much time as they should acknowledging that getting from point A to point B is going to be the bloodiest proposition in history and not a guarantee besides. Probably because there is yet another overlap with people who find technology far more fascinating than society, and thus don't care to look beyond first order effects.