I had a friend ask me a few years back about investing heavily in some ETFs that were connected to lithium mining and other minerals used for tech products. I c

I had a friend ask me a few years back about investing heavily in some ETFs that were connected to lithium mining and other minerals used for tech products. I cautioned them against it. Not because I don't think the need for these materials will continue to grow, but because I worry that increased demand will spur new innovation in finding, extracting, and processing them -- which would drive down prices in the long run. I don't have a crystal ball, but that seems to be a common pattern in the history of our exploitation of this planet's resources.