No drugs or nothing. They legit just own like the biggest ranch in the US or something like that. And they fighting tooth and nail to keep it from being taken. Either by the government, billion dollar companies looking to make a tourist place, or indians trying reclaim the land.
With that said, they do get their hands dirty a lot. Some of the ppl that work on the farm are branded(like cows) and usually the only way to leave with the brand is in a body bag. They may break the law on some intimidating/bullying ppl stuff or killing, but it's usually in the name of "keeping the farm/family safe and in one piece". So the Duttons are usually seen as the "good guys". Also since they run a big ranch, they plugged in with the locals a lot, like the mayor or sheriff. Which gives them a lot of power. Especially with a son running the cattle police or w/e that shyt called.
Straight up it's like a cow boy soap opera.