alt Hacker NewsIt's definitely an issue but typically not until you pass the ~20 year mark. I recently sold a very low volume car that is now 26 years old and there's definitely a secondary market now in hoarded parts as the originals become less and less available from the manufacturer.
You might want to take a closer look into the current state of play on new and late model vehicle parts availability and general serviceability, because your take here appears to be a couple decades out of date. Parts are frequently difficult or impossible to source for cars that are less than 5 years old.