What percentage of the population do you think is intellectually capable of running a bottle capping machine vs. creating web content or advising companies?
The problem is not the brighter 50%. The jobs you describe, BTW, are probably limited to the top 25%.
The problem is what do the people who could do a fine job on the factory floor but nothing more intellectually demanding do when there are no more factory floors?
There are still plenty of manual labor jobs out there. What about being a roofer for instance? Or a landscaper?