That's because cars are fundamentally hardware products, not software products. Yes, software powers the heart of it (ECU), but it is just another "part" in a million other parts, not the main central selling point of the car.

So, if I buy an expensive hardware product for something that can significantly alter my net worth, it is not unreasonable to expect it to last a few decades.

The analogy for this would be the same as buying a property/house. Just because it has a smart home module in it, doesn't make it the central USP of the house - people invest millions into it for the location and size (area), not for the software it runs on.

However, what's happening today is software is being pushed as the central USP of the car, kind of like how they did with phones - and that's not a good thing and which enforces my belief further that we need less software inside hardware products, not more.

And because we know cars do not have to have all that crappy software. We have cars lasting decades without it.