What other instances of "we did our job as little too well" are there?

I can think of tabacco and other drugs, but that's not really the same. Monopolistic behavior doesn't really fit either. Maybe Kleenex marketing doing so well their name became interchangeable with the word "tissue"?

https://en.wikipedia.org/wiki/Hyperpalatable_food , One could argue about the plastic usage of the Coca-Cola company, etc

Good call. Maybe the US needs a food score system on the label like they have in some European countries. Obviously that system has it's flaws though

Condoms or contraceptives (if they correlate with the drop of fertility