Some people can win a huge amount as jackpota but yet the amount that they won can not be compared to how much money they have lost in entire life while gambling, can you say such person has won the casino because they won a jackpot?
If you believe that sometimes, gamblers can also win the casino, kindly drop all the explanation of why you have such a believe.
It's laughable, because gamblers can't win casino " reasons" before you win a jackpot you have been engaged in gambling in several occasions, and engaging in the gambling often you have spent nether more than what you won in Jackpot or average during your participation in the gambling, even if you won Jackpot that will gives you the hedge to keep on staking higher, and you will not be gambling with a small amount of money.
So half of what you won in jackpot and the one you have lost in gambling previously can be equate with the amount you won, so I can not agree will such theories, that gamblers can win a casino, but in another way round of understanding, someone who wins gambling in casino has won casino at that point irrespective of he or her previous losses in the gambling.