I think this can be happen but, need long time to make this come true, because there is no rules for the ICO developers before start the campaign and ICO project, so if they want to make a project, the just make it by their concept.
I think the bounty participants and investors should be smart to choose a project, we can choose the project from the trusted campaign manager or campaign platform, there is many trusted platform. But this not enough just by that, though after the tokens distribution, it can be scam, that like XTO tokens, so we should learn more about how we can choose a project.