Ask HN: Why aren't there any large e-ink monitors?

I tend to read PDFs at my computer, and I would prefer to read them on e-ink, on a large display.

I just searched and found Dasung Paperlike[0], but it seems both quite small and quite expensive.

Is there some technological limitation to creating a large e-ink monitor?

0:https://www.indiegogo.com/projects/paperlike-world-s-first-e-ink-monitor-13-3#/