I am reminded of the P2P/decentralized nature of Napster and how it was going to be a revolution.
Napter's P2P infrastructure (and later Gnutelle and Bittorrent) allowed it to operate in a legal gray zone or at least have deniability. But Napster's lasting innovation wasn't P2P, it was showing how popular digital music was when it was being fought by the powers that be (and Bittorrent showed how popular digital films would be.)
BitTorrent is still around, primarily for pirating content. It is no where near as popular as the legal means of accessing and distributing digital music and video though -- Netflix, Apple Music, Spotify, Disney+ have grabbed the main innovation and separated it from the decentralized P2P infrastructure that first enabled it.
I think crypto is likely going in that direction. People want digital cash. People want NFTs. But they do not need this wasteful decentralized infrastructure and the complete anonymity that it is designed around.
That said, I think the criminal needs will keep decentralized crypto around forever, even after it is likely banned in most places, just like BitTorrent continues today.
Crypto servers a great purpose just like Napster/Gnutella and Bitorrent did -- it is forcing us to modernize our traditional banking infrastructure to compete with these wildcat currencies.
Digital cash versions of each major currency will exist, be formally blessed by the powers that be, they will probably have at least semi-centralized infrastructure, KYC and rollback capabilities and near 0 gas fees. KYC and rollback capabilities are key for reducing crime.