Who would pay
Freelancers and writers focused on text production, as well as users pursuing energy efficiency who are willing to pay for a new type of laptop.
Current workarounds
Most existing products are based on Android and cannot meet the needs for fully open-source software and low-latency typing. Additionally, insufficient E-Ink response rates affect typing experience.
MVP idea
Develop a writing laptop with a high-refresh-rate E-Ink display, low-power ARM architecture, and Linux system; it can even be equipped with foldable solar panels to extend battery life.
How to validate
Launch a prototype to the target user group to test battery life and writing experience, and assess willingness to use; risks include display technology and costs failing to meet user needs.