@tess True. However, I can rattle off a few right-sized EVs that didn't quite make it, or outright flopped. One of my favorites is (was?) the Evovelo (http://www.evovelo.com), which just announced the end of the project, and are looking for another group to take over.
There's also the PEBL (https://www.better.bike/models), which are kinda steep. Dunno how they're doing. They're supposedly an upgrade over the ELF (https://https://organictransit.com/). We don't hear much of them in the mainstream press