Chris Larsen, who is the cofounder was estimated to be sitting on $20bn when Ripple went sky high. He tops the list of the top-20 richest individuals in crypto.
Rounding out the top-20 is Song Chi-Hyung, the founder of a cryptocurrency exchange in South Korea. He is currently valued at approx. $350mn. Not too bad.
The top 20 aside, it wont be too far a stretch there there are several 100’s if not 1000’s of individuals who have become millionaires off crypto - either, buying/holding, trading, starting companies etc.