“Do you really think that these ads will accomplish anything? If they want to drink and possibly endanger themselves, they’ll find a way, unfortunately.”
That is probably true, but, there is no reason to enable it. Two years ago several rowdy bachurim were in my living room trying to take wine and were opening the breakfront looking for scotch. When I threatened to call their parents, they were out the front door like the proverbial bat, at least there is some deterrent.