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.
I think the best example is XEM.Thx for bounties! Good jewelry.
If you are one of the original holder of it and hold it all the time, you should be a millionaire now.
If you sold it during its peak, you should have more than 3 million.
But this kind of thing will never happen again.