I think they are starting now and when the big boom of EV starts with the traditional manufacturers I guess we will not have issues with spare parts. Although I think the automotive market is going through a huge transformation and it might be that a car will become something like a mobile plan or smartphone contract where every 2-4 years you exchange cars.
Btw... Have you seen the new VW ID3 ? I guess it’s the closest thing to a mass market small car you can get nowadays.