Could be, but it appears that the price of paper started its decline long before movable type was invented.

Using the internet analogy, movable type printing would be more like the LCD flat screen, which contributes mightily to the internet (especially mobile) but well after the Moore's Laws of integrated circuits, magnetic storage, and optical communications technologies have provided the basic infrastructure.

It wasn't either of those things. It was only possible due to the development of novel ink: https://www.bl.uk/treasures/gutenberg/ink.html

I'd argue type and ink were an integral invention.