I think that we will slowly transition into an era where Crypto will take over fiat, maybe not now, neither in 30, but more like 50 years everything will be price tagged in crypto. Crypto just allows payments to be faster, easier, secure, etc...
Take this scenario as an example:
It's 2070 and you're grandchild is trying to buy his new virtual reality gaming kit produced by Tesla.
What do you think is a best suitable way to pay for it:
1) The fed has a "crypto dollar" backed by "trust" which they regulate.
2) BTC or other Crypto (decentralized) (given that transaction speed and costs are efficient by then).
It's obvious that a crypto decentralized option is by far the best option.