Blood to Pay the bills
There are both professional bounty hunters and amateurs.
Professional bounty hunters claim a mark, and then get paid. Their only profession is seeking the wanted. If another bounty hunter is already on a job, they’ll leave space. No need to cause waves. Just keep on moving.
Adventurers will sometimes go after bounties. They don’t have the social obligations of professional bounty hunters. It isn’t uncommon to see a party of ‘heroes’ develop a rivalry with one or more hunters… unless there’s one in the party who follows the unspoken rules.