One commonly said counterpoint is that having independent dealers means you get better warranty service. Here's how it works.

I had a Subaru, and Subaru had a problem for a decade+ that their head gaskets were tissue paper and frequently failed. So I had one free replacement mid-warranty.

I went in just after the warranty expired for a normal service and lo and behold, the head gasket was bad again. The dealer replaced it for free. What happened? They defrauded Subaru.

So sure, there's an advantage. Not only will a dealer happily be aggressive at any warranty repair, they'll even commit fraud doing it.