I think you're right when you talked about removing the fiat valuation of the cryptos. Once people start trading crypto for actual things more often, then we'll see banksters lose even more power. Someone posted on Steemit about selling their car for Steem. Another person posted about how they bought someone lunch in exchange for a Steem Monster. Those types of things will help demonstrate the value of the crypto aside from fiat. If you don't need "dollars" to buy things, why would you care about many dollars it costs?