Bounty is a medium for advertising a project whether ICO is completed or not,,, if a project is still finding it impossible to grow in the market, they can conduct bounty campaign to promote the coin so they can have much volume in the market.
A viable project should not find it hard to grow after ICOs, if the team members know what they are doing and are working hard, before bounty hunting came into existence, there were projects that spoke for themselves in the like of Facebook, amazon, ebay and so on.
They didn’t have to use bounty to promote before their project became a success, bounty should just be one out of many means of promoting a project and creating awareness and no matter the awareness, what matters most is the project content itself, did they do their research very well to know that the project the ICO is coming up with is what majority of market users need and not just minority that will make no impact.
That's undeniable facts, working products played well and not the promotions alone, bounties act as one of those many ways to advertise such products and attract people to use and invest, with promising outcome results, most projects gained investors trust after learning deeper.
Developers needs to win investors trust in different perspectives, if bounty can lead them, they will maximized this venue to attract more.