Arguably, a single black market web site was sufficient to support a $100 price point. A mature black market ($1tn/an on ~2mm btc float @ V=6) PQ/V~=$84bn, => btc = $42,000) is definitely sufficient to support a moon shot. Every nation on earth could outlaw bitcoin (not going to happen) and it would still make current holders an incredible return, in exchange for their willingness to endure the insane volatility.