I think that bounty companies will live as long as there is demand, as long as there is a cryptocurrency, everything is done to attract investors, if the ICO continues to exist, respectively, the bounty company as well.
As long as the potential from this market is still huge, so many talented and innovative team members will still be involved in and create their brand in the crypto market.
If projects don't want to give out coins during their crowdsale and ask for something else then bounties could die out.