Good, I do hope that you can reach out to your colleague and let him know about this link and hopefully he will get all the help he need to fight this addiction because it's really hard to conquer it alone, without any help from someone, whether family members or from those people who have experience the same and was able to "win" their battle.
And it's also good to hear that you are going to speak about the ill effects of gambling addiction to young kids. They should open their eyes about the dangers of gambling in their young lives.