I think all of this can be profitable but having a difference from the highest level of risk is gambling because when you lose you will lose your assets, you better trade and become a campaign participant and if you can assemble and run mining tools.
Yes, most of the money we lose them in gambling only we don't know who is going to get benefits from it. So the best way to make money is through trading because we might analysis here to make a profit. Coming to bounty campaign it is a very good way to promote the ICO in order to make some profit after the crowdsale.