Well, that's certainly true for the majority of modern software, but the operating systems of yore and the software that ran on them was designed to handle old

Well, that's certainly true for the majority of modern software, but the operating systems of yore and the software that ran on them was designed to handle old slow LCDs and restricted color environments quite well. Mac OS up through System 7.5.5 works excellently on such displays, because it had to run on several models of PowerBook with black and white or grayscale passive matrix displays, which were notoriously slow. While not as good, black and white support remains decent all the way through the end of Classic Mac OS, with version 9.2.1. For this reason, when imagining an e-ink semi-unitasker laptop such as this I imagine it being built with extremely low power hardware and running old operating systems, such as the aforementioned Classic Mac OS. I'm sure DOS/Win3.1/WinNT could stand in here too, probably more easily since 486/586/Pentium-compatible x86 CPUs are still being manufactured. One wouldn't be able to run Google Docs on such a machine, but there's a veritable cornucopia of abandonware readily available for such platforms at places like Macintosh Garden[0], and given highly specific use case of such a machine I think most people could find something that suits their needs. [0]: https://macintoshgarden.org https://macintoshgarden.org