bounties as any of the products/services have their life cycles
they peaked a couple of years ago and now in a decline stage :
same goes for ICO's that are pretty much interconnected
even rebranding them to IEO didn't help , less and less projects make it
the market is saturated , people got enough of the scammy , useless tokens and projects that bring nothing new or interesting and which sole purpose is to raise money for the creators