There's not much else around. They don't know what else to do. Education/job training expensive. They've got loans to pay back, so they can't stop working to look for another job. They're on some government assistance program they can't afford to lose, but it comes with work requirements, so they can't retrain. The pay (including government subsidies) make it just bearable enough to keep from revolting. Etc.

Like what? Farm another product that has the similar problems? Row crop farm where generating a 2% return on investment over a decade span is considered a success? The response has been farmers dropping out of the business entirely, which ends up with some few people doubling down into larger operations, which only makes the problem worse as it is harder to pivot and makes processing and distribution even harder to divert away from the big controlling players.