You do know that btc now isn't really a currency (and revolutionary, yet, but has potential), but store of value?!
yes but fiat currency isn't really currency either.
No, fiat is a currency but it's not (good) store of value (same goes for Fiat cars

)
No, fiat looks like a currency, but it has absolute protectionism and absolute abuse by the state issuers (at least until hyperinflation) until BTC and CC's came along.
when you have open competition of currencies, i.e. by any entity, then you have currency.