Yes, those already in it want to go higher, for sure. Can't throw Kim dotcom very far at all... lol.
In the larger picture, yes crypto is pretty tied to fiat. But you can get it without. I got most of it without fiat, thanks to Steem. Others can mine for it. If fiat fails, then ppl can't pay for power to mine, but maybe at that time crypto would be accepted so they would be fine and the world would keep on in short time...