Yeah, at the end of the day what matters is how much money you made minus how much you paid for the games.
A gambler will be addicted of they think they cam earn more than what they pay.
The hard truth is that the odds are against the gambler and the gambler, based on the maths, will eventually lose all their money against the casino
If the money we use to gamble exceeds the amount we win, we still lose. But we will find it difficult to recover those losses because we are gambling where the losses will come and be even bigger without us realizing it. A gambler will not think about how much money they have used for gambling because they just want to enjoy gambling as usual. But they should start calculating how many wins they got and compare it with the amount of money. That is if they want to reduce their gambling activities so they don't become a serious gambling addiction.
With the person who are just using it as venue to have some entertainment and not a casual or a regular gambler they will just spare that money and will move on without trying to chase their losses in case after the session they lose everything that they allocate for that particular gambling participation.
But if you are not that kind of person, most of the time you will after those loses and you will try to find a way to recover your money, leading you to more potential amount of money to lose and leading you to do something that's not usual worse things that no one expect that you will do.