Their adoption will eventually be a pure numbers game as new electric becomes cost competitive with used gas. That's how the pragmatic adoption will happen.
You don't need, for instance, catalytic converters or a bunch of other expensive, low tolerance parts and since the fuel storage is electricity, new chemistries are way more feasible. Everything points to a car price crash in the next decade or so. There's already sub-$5k models in China.
This will drop even lower when things like inductive road charging or other ways of passive refueling while in use (such as solar). Then you can tear even more out.
Imagine office parking lots where inductive charges were put in every parking spot as they laid the concrete being an expected, normal thing. No cables, no plugging.
Most people buy used cars today. In the future (10-20 years), most people will have these: frequently passive charging cheap vehicles using non expensive commodity parts.