That's another perspective to the whole "loudmouth" thing. Yeah, betting shops can definitely do that as part of their marketing strategy to hoodwink more players to their shops. No doubt, gamblers will want to associate with shops known for regular wins than those without such luck. It's a natural way to look at it.

Unfortunately, I've a different perspective to that. If I know a shop does that when people win, I won't like to bet in that shop. I don't like people breaching my safety because they want to prove a point.