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
You have not set forth your position in detail. What does it mean that ICO teams should have their own budget? In what currency and in what amount should it be? The ICO team pays for the participants in the ICO generosity campaign with their new tokens. Payment in anything else is unprofitable for them. We can still talk about payment at will in ethereum. In general, the existing payment system seems to me the most optimal.