Yeah, well that's your opinion. I don't think that you know what you're talking about. At any rate, my point isn't about whether crypto-currency deposits backed by fractional reserves are legal or illegal. My point is that the idea that there is a fixed supply of bitcoins is a lie, a marketing narrative to fool gullible idiots into thinking that the price of bitcoin can only go up. And my answer to that is to say that is 1) it's not true that a limited supply ensures that the price can only go up, and 2) it's not true that the supply of bitcoin is fixed, because financial institutions can create additional bitcoins via fractional reserves, and because as a consequence of international trade the supply of bitcoins in different economic areas would fluctuate (sometimes wildly) creating periods of inflation and deflation, just like it happened during the gold standard.
I used the US as an example; what you're describing is illegal on every single major international exchange[1]. And as far as banking licenses go: the FDIC won't touch Gemini's actual non-third-party-custodial depository products with a ten foot pole, and they're about as clean as a cryptocurrency firm can be.
If you want cryptocurrencies to "succeed" in some nebulous sense, it would be good to get a start on the "not just good for crime" part of the equation. This isn't it.
[1]: https://en.wikipedia.org/wiki/Naked_short_selling#Regulation...