More than 50% of the world population gamble in one sport or the other and some are making good money while some are still hoping and praying for their luck to shine.
And where can we found the statistics that 50% of world population are gambling and most of them are making good amount of money? I think only the house and a handful of few percentage of gamblers make the most of it and the huge percentage of those who gambles are at loss. Gamble for the most isn't always 50/50, most of it leans towards the house side, it's probably 30/70.