The problem is that we live in the age of the mega-millions where most people are not happy with what they have. They all say, “if only I won the lottery…”.
Let’s say you did win $100 million in the lottery. Would you be rich? Can you afford a new home? Yes. Can you afford to buy a baseball team? Probably not. Do you need to buy a baseball team? No. Do you need to buy a new house? That is questionable. If Hashem feels that you do need it, and you give maaser, than he will provide you with the means to buy it, but he won’t necessarily give you $100 million.