One of the fascinating observations in Carlota Perez's "Technological Revolutions and Financial Capital: The Dynamics of Bubbles and Golden Ages" [1] is that outdated technological industries continued to provide superior returns even after they'd been supplanted. You'd have more money today if you'd invested in Exxon in the mid 1970s than if you'd put the money in IBM, even though Exxon has slipped from the top 10 to something like 40th place in the S&P. Meanwhile, railroads peaked at 60% of the US stock market around 1860, shrinking to less 2%, yet continued to beat the market for the next 120 years. Discussed recently on the Rational Reminder [2] podcast.

[1] https://www.amazon.com/Technological-Revolutions-Financial-C...

[2] https://www.youtube.com/watch?v=vEwwtjDo1dU