It failed because there are dozens of IC (internal combustion) powered vehicles that provide better transportation for their buyers.
Yes, true today, but not in the coming years.
The majority of todays automotive R&D is going to EVs.
The Yaris and its kin will be around for many years.
Mid-price will go EV.
The main driver of EVs in the US today is government mandated fuel economy standards. The only to meet them is with EVs. Down the road, though, there is simply not enough electrical production and distribution to charge the batteries in large numbers of EVs. Unless there are major increases in nuclear powerplants, most future EVs will lie along the side of the roads with dead batteries (along side the dead birds from failing wind turbines).