I think that the biggest problem at the beginning of addiction is lack of money, every addict will always need money and that is what produces the different problems, when a person has enough money, like millionaires, they play until they get bored, they don't even like it. It doesn't matter if they win or lose, for them it doesn't matter, you rarely see a millionaire enter a casino, that is almost unheard of, but people who are not millionaires do, and it is because of the lack of money, in this aspect we are people who almost always see things from the point of view that must be corrected quickly. If a person is already addicted, my advice will always be to seek professional help, which is normal, of course. The rest is at the discretion of the person.
The goal of most people gambling is indeed to get a win to improve their financial situation. But with this kind of gambling goal, it will usually become a problem when the gambling they do ends in disappointment. But for people who do have money and gamble, maybe they will not have a problem when the gambling they do ends in defeat is also not a problem, but it does not rule out the possibility that they will also experience problems even though they have enough money. It's true what you said, maybe there are rarely millionaires who enter the casino to find entertainment, because in my opinion if they are looking for entertainment, of course gambling is not the only thing that can be done, there are many other things that can be done.
For beginners who gamble, I think they should never think that gambling is something that can help their finances, because that is a wrong assumption. It is better to gamble reasonably so as not to get addicted because if you are addicted it will be very difficult to be able to fix it even with the help of professionals.
The first advice I give to a beginner is to take care of their money, to grab it and say, if you have 100usd, spend 20usd and not risk more, don't lose control and don't spend more than that, even then 20usd for me is enough , and that is something that you have to see, of course it is my way of seeing things, that is why I always say, the best thing when you go to play in a casino is to spend what you are willing to lose and with that you save a lot of money, Don't bet for the sake of betting or go crazy with betting, you have to do it in a controlled way, money is what you should try to save, and that is sometimes what players do the least, I always emphasize that, and I think it will never happen. I got advice like that when I started playing.