I imagine it's a similar story to why the industrial revolution did not occur in ancient times, despite elaborate steam powered machinery being known technology

I imagine it's a similar story to why the industrial revolution did not occur in ancient times, despite elaborate steam powered machinery being known technology: insufficient demand to promote scaling the technology into affordability / practicality. Roughly speaking I imagine it took a master craftsman on the order of a year to make the Antikythera mechanism, and all it did was automate a fairly niche task that could be done relatively easily by hand anyway. It is fascinating to consider that there must have been many similar devices that we've never found, and tantalizing to wonder if there are other classes of ancient mechanical computer we're not aware of. But fundamentally, they're very very expensive toys, not ubiquitous household items like coins. Even if a thousand were made, which would take generations to do by hand, we are still lucky to have found even just one. Nearly 2000 Albatros D.III fighter aircraft were built to fight in WW1. Today, only tiny fragments survive in museums around the world. What will be left in two thousand years?