The World Is Full of Sleeping Beauties

I would point to the World Wide Web as an example of this.

This book

https://eric.ed.gov/?id=ED058713

circa 1970 predicted that you'd be getting your news online in the early 1980s based on the "Delphi method" polling both experts and laymen. The author was famous later for books like The Media Monopoly that took a Marxist perspective but this book takes a McLuhanite perspective but attacks the concept (and wholesomeness) of "news" as aggressively as anyone has.

It turns out technologically all the pieces were there in the early 1980s, there was Compuserve, there was Minitel and various sort of VideoText or TeleText systems. Analysts from the early 1970s expected cable television to rapidly evolve into a more flexible system and vastly underestimated the foot-dragging that would happen in the process of tearing out obsolete copper telecom infrastructure and replacing it with fiber.

With the possible exception of Minitel (sponsored by the French state telecom because it could eliminate the expense of printing telephone directories) there was no corporation that could make the end-to-end investment to make a service that was compelling and affordable.

By 1994, however, technology had advanced to many many multiples of what was required, to the point where no great end-to-end investment was required to build a system, rather people already had investment in their computers, high speed modems were affordable, the price of intercity communication had dropped dramatically despite AT&T and other telecoms having no way to pass those low costs onto consumers to stimulate demand, etc. It was all so cheap that people started publishing stuff online without worrying about what it cost figuring the money would come later. Thus we got the web.