There are two prerequisites to me being ok with the eShop closing.

1. The entire catalogue (or the most historically valuable portions) must be in the hands of historians and/or game preservation organizations

(option A). The games humanity collectively cares about would have to all be remade, and remade well, for later audiences. (option B). All titles the public want to remain available would have to be made permanently available by some other means, such as legalized emulation infrastructure (such as the Virtual Console on previous systems, but much more permanent). 3. (an alternative to the other options/prerequisites, I’d rather this one not happen). If other prerequisite options can’t be met, after so much time has passed that functioning Switches no longer exist.

My point is, I’ll be ok with the eShop closing when as little information would be lost as possible.