I know this has been posted before, but the word gambling is a bit of a general term:
gam·ble Audio pronunciation of "gambling" ( P ) Pronunciation Key (gmbl)
v. gam·bled, gam·bling, gam·bles
1. To bet on an uncertain outcome, as of a contest.
2. To play a game of chance for stakes.
2. To take a risk in the hope of gaining an advantage or a benefit.
3. To engage in reckless or hazardous behavior: You are gambling with your health by continuing to smoke.
It all depends on your definition and perception of gambling. Based on this definition, can you think of anyone who has made money without taking some sort of a gamble?
Will buying an investment property to flip it and sell it for a profit a gamble? Aren't there adverse possibilities in the odds for or against that profit?
How about driving a truck for a living? Is that a gamble? You can quantify the probability of an accident and mortality rates? Is that a gamble?
How about starting a business? If you are not 100% guaranteed success and a positive outcome, then you must be gambling. Right?
The word gambling has the same taste in people's mouths as the word greed. They are both facts of life except when pursued recklessly and an in excess.
Just a few thoughts....
PS: Quah... I seem to be following you around today.