Why do you think it should have happened already? We’ve only had good lithium ion batteries for a decade or two. Same for the internet, maybe 20 years of widespread use. Solar cells are only just starting to compete with coal. There is much work to do, and we’re doing it but it takes time.
Information can travel instantly, that’s an important change, but the process of actually building the semantic router is not trivial. And the tech for affordable off-grid civilization is really juuust maturing right now.