You might return them and get another brand. Even that little positive signal is often worth the wasted impressions because most of the other signals are either so weak or so competitive.
But I won't. From the deepest depths of my heart and my soul, I will not and I will never return something I bought for a competitor's product because I was served an ad.
It's not a positive signal, because for the lifespan of that product I just bought, I have removed myself from the addressable market.
