This is a trend that happens a lot with bounty campaigns this days for blockchain projects, the truth is if a project doesn't meet its hardcap it is almost impossible to pay out the entirety of the bounty budget.
I think a change of approach should be adopted, projects should have a bounty budget that they will be capable of paying as long as the soft cap is reached.
This may mean a smaller budget but it also ensures hunters don't just join out of greed and spam repeatedly.
At the end everyone is happy
If they do that, the budget for the ICO will be very low. It could be under $ 100k and they will not be able to attract many bounty hunters to participate in their project. They need more bounty hunters so their projects can be more successful