Fortunately ubiquitous smartphones (together with systems like CarPlay) make at least entertainment and nav systems more modular and less locked in to both development lifecycles and operational lifetimes. I never use my car's base-level entertainment system except to plug in my iPhone output and it doesn't have a factory nav system.

The next issue is/will be assistive driving systems which will become more sophisticated and common--perhaps up to even full self-driving under some conditions. We'll probably reach a point where cars that are otherwise perfectly operational will lack what are considered table-stakes (or even legally required) convenience/safety systems in new vehicles.