Robots are the answer to reindustrialize the developed world, but that necessarily keeps industry smaller than services.
Factory work isn't generally physically demanding, more tedious & repetitive than anything.
It's air conditioned, generally pays a lot more than minimum wage and has benefits.
You have a job description, the standard operations manual, and you operate the machine that does most of the work.
All complicated work is either outsourced to machines, enterprise systems, or architects/chief engineers that setup the whole system on day 1.
all day 2 operations are mundane blue collar work, just like warehouse work or fast-food work with no viable path for career growth