Not my AMA, but I'd like to add that valuation depends on whether you consider Bitcoin now or after the release of the lightning network and other important sidechains like Liquid and Rootstock. This is important because Bitcoin now and then are totally different things. Today's Bitcoin has pretty much hit its maximum capacity and can't scale to become a mainstream payment network. All it can do is improve in quality and security, which is its strong selling point right now. Today's Bitcoin is fairly valued at 10B USD IMO. Tomorrow's Bitcoin is a totally different thing: with Lightining it becomes a potential competitor of global realtime payment network like Visa and Amex, with Liquid it becomes a settlement backbone like SWIFT, and with Rootstock it becomes a direct competitor of Ethereum. It also ceases having scalability issues since on-chain traffic becomes almost exclusively dedicated to large transactions, lightning settlements and side-chains traffic. Tomorrow's Bitcoin could easily command a trillion dollars market cap.