No, I am definitely not rich in gambling because I haven't won any big prizes in gambling games. As far as I know its not actually a source of riches, but it even drown you from wealthy rich into a poor individual if it happens; you became addicted to gambling. Most of what I had talked with, they have bad experiences on gambling when they got used to it specially if they have the fun out of profit when their gambling activity was not managed well. When you became rich with gambling it might have made you win in a jackpot lottery or in a sweepstakes raffle online but chances of it is very low, I think its 2% out of 100%.
You are right, Maybe around the world, Less than 0.001% of gamblers who can be rich by gambling. It's a difficult way to be rich, cause gambling is based generally by luck.
As you said "its not actually a source of riches" . So people who become gamblers always search how to be rich by gambling, so most of them caught with a lot of losses.
For me, I don't considered gambling like a source for profit, so usually i bet only for pleasure. Which i like to be raring to win.