~snipped~
...Sometimes these people do this just to let players know that people still win here.
…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.
How about in a situation where you are placing your bet on virtual (one of the popular games that people like playing in local bet shops), and the screen is always faced in front of everyone to see you make your selection as the cashier prints your game? The people who are beside you will see your bet and what you predicted, which, even if the cashier doesn't announce your winning, will make it easier for them to know when you win and when you lose since you will also be paid instantly for that. How will you handle such a situation? Sometimes it's just better to avoid some of this physical gambling if we want to maintain our privacy and, at the same time, our safety.