There are numerous ongoing bounty programs who are rewarding the bounty hunters by stakes model and sometimes bounty hunters are disappointed by the fact that ICO's don't meet the softcap thus the users do not get any benefit for their hard work or sometime they receive too little rewards for their hard work due to stakes systems, do we really need stakes system or the best thing will be provided a fixed amount of tokens for bounty (like $100 work of tokens per week or so)?
They have much more flexibility in their bounty campaigns using stakes method rather than fixed price. In any case that the bounty fails to meet the softcap, they can adjust the amount for the bounty hunters as simply as that.