> a ponzi scheme requires that $ from ealier investors is paid out to later ones.
(the other way around)
A BTC is worth nothing unless you can sell it for something (such as USD). It is the later "investors" who buy BTC for sky high prices that allow earlier "investors" and miners to cash out.
Interesting counterpoint! How would we allay the repartee that buy-in is mining hardware and the payout is coin? It's not exactly cash-to-cash, but cash-to-hardware-to-coin-to-cash where the endpoints are still the same. Or is it arguable worse and more risky than a Ponzi scheme in that regard?