I actually wonder if there is not single moderately sized industry that does not have some interest group...
They're basically necessary to do business in an advanced society that has rules governing every aspect of life. Those rules (even if good) often have unintended consequences and advocacy groups can help ensure that their industries are considered when rule-making.
Like, the only reason "almond advocacy" even exists is because dairy and beef are some of the most lobbied and blessed industries in America. They can practically do whatever they want, whenever they want, so fuck you, pal.
lobbyists will advocate for taking the water right from under the noses of the workers, and the workers will turn around and praise their employer for maintaining their jobs... it's often some kind of perverse shell game
at the end of the day the owners fly off to wherever with a pile of money and the workers are left without jobs or water — these false dichotomies of "if it weren't for lobbyists all jobs would be regulated away" is often used to disenfranchise people from actually changing these systems
It only becomes advocacy when you take the money out of it.
>In a series of secret meetings in 1994, the Resnicks seized control of California’s public water supply. Now they’ve built a business empire by selling it back to working people.
https://perfectunion.us/how-this-billionaire-couple-stole-ca...