That should be do-able. And of course it's hard to say how long a bike "should" last. It's not unrealistic to get 40 years out of a conventional bike, though some parts are consumable. Since my bikes are thrown together from parts, there's a bit of survivor bias going on when I say that they're 30 to 40 years old, and there are some older technologies not worth saving such as steel rims.

What I do hope is that otherwise good bikes and their parts don't become un-salvagable because someone can't find a wiring diagram or something like that. I hope that like with conventional bikes, a cottage industry arises that shares information and recycles out-of-fashion bikes into usable vehicles for the rest of us. What do they do with old bikes in India or Africa? That's what I want to see. I don't feel bad if that 5-10 years is followed by a decent life in someone else's hands.