Cars had it, because an ICE drive train is so cheap that in the price range you are talking about it's almost negligible. All the cost is in nice to have things like extra sensors for every tiny niche use case. Fast forward to BEV and suddenly the drive train eats such a large part of your cost budget that you are hard pressed to cut much of the fat of the ICE era.

Carmakers haven't stopped doing electric variants of ICE models because it's oh so difficult to put batteries where an engine, tank and gearbox used to be (it's not), they switched to dedicated BEV designs to have an opportunity to do a "cost reset" about their approach to all those little nice to have things they introduced in the late ICE era to maximise the price buyers were willing to pay for a given vehicle class. The BEV-specific base architecture certainly helps, but it's as much about the expectations reset. This certainly does not mean that they switch their rain sensor to the Tesla approach, they might actually end up cheaper cost-optimizing what they have and know, but BEV does mean looking at costs in a very different way than in the ICE era.