It is true that at first I thought too that the reward system is broken and that the whales are going to be richer and richer but in time I have seen my account growing, and I realised that I was wrong! Whales became whales either because they have invested money in these accounts or because they have done a great amount of work to get where they are. And this is what I will be trying to do, even if I won't succeed, at least I will enjoy the ride :)