No, even then it is the same concept. The big global bottled company thought that the intrinsic value of the water is more than 50c or maybe more than 50$ . Now you have bunch of people carrying their water bottles around, giving them even more advertising. People think that water bottle company is what I should get based on those carrying it around. So infact, they are giving away water bottle for free, which compared to competitors might be 50c or 50$. but they think it is worth losing that for ad