Bounties managed by famous, professional, and experienced managers will give bounty hunters higher probablity to get payments (they will most likely get payments for their works). because experienced managers have enough skills to screen good and bad companies, and have enough skills to make sure that their participants will get payments. That will help them to maintain their trustworthy. In contrast, inexperienced managers are lack of skills & experienced to protect themselves from scam projects as well as protect their participants. At the ends, sometimes they will be scammed by scam companies, and participants will not be paid.
The old managers knows how to negotiate with team to benefit hunters. Sometimes teams might want to change the agreement when they couldnt raise the fund or consider the value for token to big. The experienced ones know how to mange such, lots of cases in that line