There will always be bounty, just not a lot of people that will do what it takes.
Why are you so sure that gifts will always be there? while the fact is that now many found the ICO project fraud, which brings forth investors' money, for personal gain, it causes many big investors kapok to invest in ICO projects, if this continues, it is not impossible that the ICO project will always be empty of investors and cause the project ICO fails, and the rewards earned from bounty campaign projects will be little or no will be paid.
Because, Marketing cost money, and bounties are cheap...
In the IPO markets, companies spend millions (cash money) on marketing their IPO. sometimes upwards of 10% of raised funds on marketing!
ICOs are able to do this marketing without the Cash... By giving out a small % of the tokens, which costs the company 0.
All you bounty hunters think this is just free tokens - when in fact, you are being paid marketing rewards for promoting their project.
Take a step back and compare it to traditional IPO markets. Crypto is just beginning. IPO's raises 100s of billions each year, ICO's are only topping 10bill.
I assure you bounties are here to stay and should become more lucrative as the markets grow up