I do both and I still not rich 
. With the current market, you can not get rich with the bonus campaign.
It's because most ICOs are "SCAM" and only few ICOs are legit that's why your not rich even if you do bounties and airdrops. There's another way though by being a hodler or as a trader if you want. You can search for guides on how to be a successful trader and become rich. . With the current market, you can not get rich with the bonus campaign.
. I use the money I earned through the bounty campaign to buy top altcoins and hold it. I trade many pairs on the exchange if it have good signal. Maybe I will rich in the future