"A Ponzi scheme is a zero sum game. In a Ponzi scheme, early adopters can only profit at the expense of late adopters, and the late adopters always lose. Bitcoin can have a win-win outcome. Earlier adopters profit from the rise in value as Bitcoin becomes better understood and in turn demanded by the public at large. All adopters benefit from the usefulness of a reliable and widely-accepted decentralized peer-to-peer currency..."

I 100% agree BTC is not a Ponzi scheme, and - unlike many in the community - I find it fascinating that Bitcoin has some things in common w/ a Ponzi scheme. For example, early adopters profiting huge as BTC goes mainstream, etc.