[rodgerd]

For some specialized uses, sure: think about researchers wanting to look at illuminated manuscripts, especially wanting to see marginalia and the like. A large, low-eyestrain way of seeing high-quality scans would be very handy.

[thaumasiotes]

I have Moss Roberts' translation of the Romance of the Three Kingdoms scanned to PDF. ( https://www.amazon.com/dp/0520224787/ )

The product page doesn't advertise it, but the books are huge. I can't actually read my PDFs because my kindle display is much smaller than that.

And yet the market for a reader with a bigger screen seems to be negligible. :(

[ComputerGuru]

There’s a lot of potential but pretty much all use cases are limited each in their own way by the current specification shortcomings.

Eg for the case you mention, the display ppi is simply nowhere near good enough for minute study of details.