The new High Life week in GTA V Online will also introduce other rewards and discounts that should allow dedicated players to expand their presence in the game. (news.softpedia.com)
It's some of the most fun I've had in GTA Online in a long while. (kotaku.com)
Therefore, according to this, i can not honestly see why they cant have poker tournaments in game, or even a lottery in GTA V Online to be honest. (gtaforums.com)