You aren't wrong, but it's not reasonable to hold such a strong opinion without experience. I spent 15 years working in high-tech manufacturing, at Sanmina, which - like many peers - also offshored the majority of capacity. What remains in the US is mostly manufacturing for regulated industry (military, medical).

Take a look at this, re institutional ownership: https://money.cnn.com/quote/shareholders/shareholders.html?s.... 95% of outstanding stock is owned institutionally, which is pretty normal in manufacturing. For decades, this has been a core investment sector for pensions and other institutional funds, and remains so, even if it's just to balance investments in tech, biotech/pharma, retail/CPG, financial services, the military industrial complex and transportation. Moreover, if you attend quarterly results calls, you typically end up with a few analysts from banks and at least one from some pension fund, who ask questions. We young people may not care about pensions as almost none of us will have one, but they still exist and still influence large pieces of our economy.