Of course his strategy won't work! All these "profitable" dice strategies are very risky, as it takes only one bad roll streak to lose everything, while you earn almost nothing on your wins. I think that it's better to bet on 60% chance to win few times and stop gambling - this way you will save emotions and most important, time.
Well you can say that every gambling game is based on luck, more or less. For example poker, It depends on luck which cards you'll get, but you also can use your skills to bluff to win, so there actually might be some working strategies in this game.