If we're characterizing LLMs as a kind of input interface I'd point out that the first GUI was released in 1973 by Xerox and the first commercially successful GUI was released in 1984 with the Mac 128K. It took 11 years for someone to answer this question. Sure things move faster these days, but we're still only a couple of months in.
With blockchains there was also a fundamental technological breakthrough (I'd argue less revolutionary than LLMs). The problem was that everyone jumped the gun and proclaimed the killer app had been discovered too soon: cryptocurrency's incarnations to date have yet to demonstrate much utility apart from being a vehicle for speculation. Nakomoto invented the first distributed blockchain in 2008...
With blockchains there was also a fundamental technological breakthrough (I'd argue less revolutionary than LLMs). The problem was that everyone jumped the gun and proclaimed the killer app had been discovered too soon: cryptocurrency's incarnations to date have yet to demonstrate much utility apart from being a vehicle for speculation. Nakomoto invented the first distributed blockchain in 2008...