The market might just not be big enough to warrant creating a product.
It used-to be in the DOS and terminal days, and it wouldn't take much to get us back there. Shut off all the eye-candy transition effects. Make your web browser, PDF viewer, etc., always scroll a full page at a time, instead of scrolling 1mm when you click on the button or use the mouse wheel. Just those few changes and you'll have something that'll work pretty well.
It's a feature of course, but most people don't realize it.
The only thing is that you need to stick to Page Up/Page Down for scrolling.
so the old is not so old, and the new is not dramatically new.
This is that product. A 60 Hz eink monitor, for $340.
Here's a clip of it playing video: https://youtu.be/povlk3hKTVA
