Back in the '50s I was up in the NorthEast and read where a Ford representative, or one of the automakers, was giving a demo on some new automated production line equipment. He was bragging on how the robots needed no vacations, sick days, rest room breaks, etc.
One of the union reps asked him how many cars did those robots buy. Embarrassed silence. While I always looked askance at any union, I thought the guy had a point.
Although not automation, a similar situation showed up years later, when Perot was running for President. He showed a photo of a Ford plant in Mexico and asked "What's wrong with this picture?" Hell, I couldn't see anything wrong. He pointed out that the factory had no parking lots. The workers there couldn't afford to buy the product they were making - they were bused in from the nearby slums. That, to me, was NAFTA in a nutshell, and has been reinforced every year since.
That’s essentially what the open-borders crowd wants to do w/ us.