Yes, when a gambler starts gambling, he will not be addicted. If someone is always in gambling he loses controlling on himself because of excessive greediness. As a result, he began to lose constantly in most of the games. So one who able to control himself in gaming, the more he will succeed.
If he continues to gamble then it is included in the category of addiction because he does not find any bugs from gambling other than he only wants to win and profit, but to limit gambling activities is to use the most minimal money for gambling, determine the profit is not high and limit the time of gambling, that the three in my opinion is the self-control factor of gambling addiction and greed.
Just as everyone gambling will seek the opportunity to make luck out of it by playing smart by all means engaging intellectual skills while some go to the extent of trying to manipulate the system all in the name of winning, but I don't think it's a thing of do or die affairs even though I don't blame them considering the rate of amounts they have lost in gambling, yet we still have some making a winning at it best and simplified means by just playing without having the intention to winning, those eager to don't actually win in most cases.