Some people just participate in the bounties and wait for few years. they don't sell their bounty rewards for low fiat reward. Ironically those people become FIAT millionaires. 
Thx for bounties! Good jewelry.
Thx for bounties! Good jewelry.
You're an optimist.
But unfortunately, some projects will die within a few years. It is important in which bounties you participated and here luck is very important. You can always become a millionaire if you're lucky.