So the two methods that you have conveyed are just an opinion, not a method.
No one can deliberately make gambling a profitable place.
In my opinion, profitable gamblers are those who can control themselves and their finances so that they don't experience too many or too many defeats because in gambling what is certain and real is only defeat.
Going by your second sentence, I think people are now deliberately working their ways into making gambling a profitable place. These people have made it a business venture either because of the economic hardship. They have brought a business angle towards gambling especially in soccer that I'm sure of because they can do their analysis and go for best odds no matter how small it is then they increase their staking power. They have realized that in soccer betting, if you bet so much games at a time in a slip that the chances are there higher to lose than if you bet very few games or even just one game at a time. So that is a deliberate attempt to be profitable in gambling when you reduce your losing chances and increases your winning chance and this is very possible in soccer because that is what many families are now surviving with.
I tend to disagree with the statement that people are making gambling a profitable place from them. Gambling is still a risky business (if anyone considers it a business). The only way one can make money in gambling if one follows the proper money management, but the problem is that it is difficult for gamblers to control their emotions.
People will get over excited when they win big in gambling and also when they lose, they want to recover their losses quickly. In both these cases they take the wrong steps which may lead to a big loss.