The internet is probably the closest the comparison, which is why I get your point, but far off in terms of the scale of the implications.
The hardest thing about AI is that we don't have intuitions for it. It will make the exponential growth that the internet brought look linear by comparison.
Assembly lines make one thing efficiently, by breaking down the complete task into small units such that no single person needs much training. This is basically what UNIX has been doing since at least the command line pipe operator was invented.
3D printers are general purpose and can kinda make anything in principle, but in practice the cheap ones are very limited while the one for building a rocket engine is priced at "hire a team of full-time engineers to build and maintain it", and in any case these are not a good choice for reliable mass production. This seems like a better, though still flawed, pattern match to AI.