I believed 100 percent because on before 2016 that people who hold coin/token from airdrop or invested coin/token in cryptocurrency has gain a  massive profit when December 2017 and January 2018 past. On those months, all coin's price going so high that bitcoin reaches 20,000+ usd and ethereum 1400+ usd. I think some of those who got coins/tokens that held them for many years are millionaires right now. I'm hoping that it will happen to me too, i keep visiting coinmarketcap everyday to see the price of my coins/tokens that i held.