Let's start with the fact that the bounty manager is the same person as a member of the company's bounty, as he also receives payment in project tokens and doesnt really depend on him and the project is of course more profitable to give his token as they can manipulate the course in the future.
We don't really know what the talked behind before the bounty managers accept the job, maybe aside from tokens from the developers also some
decent btc or valuable coins that accompanied the paycheck, whatever the reason if the team will developed good project and usable product chances
to be supported will give the bounty hunters good rewards after.