I think in the crypto space, much of the value will not actually be in P2P cash systems, but in P2P decentralised apps that will enable a decentralised web to emerge, and early adopters and network users will capture most of the value in these networks (instead of large centralised companies).
Also, having a new funding model (crowd funded token sales) could unlock massive amounts of capital to fund new projects. The implications of this could be unprecedented - so many ideas and talent, particularly outside the US, currently goes unfunded. I doubt that anybody, up till a few years ago expected to see a way that traditional funding models for new companies would emerge, literally out of the ether. Turns out there's a torrent of speculative cash waiting for founding teams (yes, at some point there will be a massive crash, but like venture funding post the dotcom, lessons will be learned and the valuable ideas retained).