You look on the situation from perspective that child get addicted and interested in everything what parents do. But that is not true. Children copy our behavior, that is a fact, but they dont it 100% copy/paste. I rarely see children being interested in cooking, cleaning, earning money at regular work, do repairs - all the activities adults do 24/7.
You're giving obvious examples that of course children don't actually wants. Who wants to go work at early age, no one, but there are some, from those unfortunate families, and they are different topic in here. We are talking of gambling games in mobiles phones that looks like just a normal phone games that even a normal child can learn and see it as normal games, can you understand that?
Ok, another obvious example. What adults gamble for, even though many lie about their primary goal? Money. Do children really need money right now? Parents buy them almost everything. Their needs are rather limited, as they dont think about future, savings and etc. All they need are new mobile, some fancy clothes, several gadgets like video console or tablet, maybe a new bike. I dont believe that a child will open gambling site and try to win money, instead of asking parents for all he wants.
Now move all that info into mobile gaming - do you really think that a child will gamble with real money and even if he does, he would do it for a long period? I think no. Firstly, most likely if he lose lets say 1/3 of his saving on gambling, he would drop it and skip to other activities, because - he would give a default child explanation as "boring" and hide fact of failing. Or he would gamble with play money and leave game after some time, because it is boring, primitive.
As a parent, I observe my child and other children. They dont usually put much effort. A fail on early start mostly forces them to quit. They are not constant, assiduous. As soon as something require making an effort, try, use knowledge, majority drop and move to million other activities.
Silly example, if a child plays a game, lets take dice, and losses 6/10 times or losses frequently, he will drop it. Take any non-gambling game. Uno for example. Beat child 3 times in a row and he will most likely never return to this game ever.
I am curious if you have children? Are you a theorist or have practice experience in raising children?