This scenario that you described seems to be good, but it is not, imagine that a person makes sports bets and that person has always managed to obtain constant profits, but that person cannot stay without making sports bets, so that person starts to have a serious problem, which consists of the following:
1 - at all hours of the day this person thinks about sports betting
2 - this person stops socializing with other people to spend more time placing sports bets and as a result is left without a job, without a wife, without friends
3 - when this person starts having losses, he will have emotional imbalance and will be unlikely to win again and as a consequence he will run into debts, sell assets and may get into drugs and crime, and will probably end up in prison or dead if his family does not admit him to the hospital
That's why there's nothing good about addiction.
There are people who can play every day but are not addicted. In these cases there is nothing wrong as long as they also play with money they can afford to lose and live and talk to people in the real world.
The function of games and sports betting is to entertain people, that is, to make people have fun. Unfortunately, some people don't understand this and become addicted, but most people play a lot and have fun and are not addicted. So we can say that gambling is a good thing
There is no good addiction. every vice is something harmful