No, because you will not always have a win every time you play gambling and that's why in gambling you will not be able to benefit in the long run. If you can not control yourself from gambling the result you will lose all your money.
Yep, gambling is not profitable in the long run because we cannot be sure that we are going to win always in the game so it is best to just control our self in gambling so we can avoid getting too much losses and addiction but if you will build your own gambling site then I can say that gambling is profitable in the long term because having your won gambling sites will attract a lot of gamblers so it means profits 
.Having your own gambling sites also doesn't sure because of site malfunction or some systems bugs .but it is the only profitable way and it is not gambling ,it is called an investment.
The willingness to hit a jackpot eventually is what makes some people addicted to gambling. Even if they they lose many times in a row they hope to hit the jackpot and they think the more they play the more chances they have. That's how people lose everything thinking every time they start to gamble "This time it definitely should happen!".