Amount of happiness is determined by a person s own Karmas, in present and past lives, money only becomes a medium (Nimmit). Money by itself has no power to make anyone happy. If one is destined for unhappiness a person will have to suffer no matter if he is rich or poor. And every person will get his share of happiness weather rich or poor.
Manusya nahi balvan hai samay balvan kabe arjun badhiyo vihi dhanush vihi baan.
A super warrior and prince like Arjun was held captive by a lowly tribal people during their last year of exile where he could not use his weapons or reveal his identity. His wealth or his power could not save him when the time was not in his favor.