pull down to refresh

My question is, "Does this have the opposite effect?" I wonder if anyone scrolls, sees something they really like, then goes to a real online store and buys it. If so, they just bought something they hadn't intend to buy when they woke up that morning. In this way, the fake store is little more than the window shopping experience where you get ideas before walking inside to buy something you just saw.
I don't know, maybe the scroll, click, buy does the trick for some.