Yes and no. For example, you buy some Sony stuff from Bestbuy, you run into a problem, yes you try to contact Bestbuy first, but they fail to you: "Well you must contact Sony now because yada yada...", you may even think "Alright, that's fair..., it's not their fault" and if Sony doesn't provide customer service nor support, I bet you, you will never buy something from the brand again, but you may buy again from the store.
It may not seem right, but a very common customer behaviour.