Yes and the reason is because we do not have the right and power to regulate everything because all of that is beyond our ability individually and that means only the government in a country can limit or even prevent some promotional broadcasts in various channels because the government has the right and power to do so, and that means there is no other way if you really don't want your child to be affected by things like this especially what they see other than us limiting the activities carried out by a child, this is the only thing we can do for prevention so that things that are not wanted can be minimized a little. On the other hand, yes you have also said something that I said earlier that now is the digital era where everything we can get from the internet, especially science and other knowledge, so the point is that as much as possible we have to direct a child to things that are indeed more positive and along with limiting them, don't let them walk alone without monitoring from you as a parent.
We should be the ones to prevent TV programs by restricting our children by permitting them to watch TV at certain times so that they will not watch TV outside of those hours. Maybe we should invite them to do activities outside the home so that they will get used to physical activities and not depend on activities at home. This is also to train them to get used to physical activity so that they don't mind if later, when they grow up, they also have to do a lot of physical activity. As parents, we must also be able to limit the use of devices connected to the internet because if they are not limited, they can access many things that they are not allowed to see. If children have been trained from an early age, they will start to get used to it and know what to do so that they will not fall into bad things and will also be able to adapt themselves to stay away from bad things they already know about.
Yes, I think this is quite simple and for this problem it really comes back to parents who do have full responsibility for their children, we are not not allowing a child to watch any channel, one of which is a show on TV but maybe along with that it would be nice to apply limits to the activities carried out by a child, On the other hand, we will not always be able to predict the schedule of shows on TV channels and that means it is very possible that when you only allow your child to watch at certain hours it turns out that at the same time there are shows that lead to negative things and one of them is the promotion of gambling, and a better solution is that you have to be next to them when they are watching TV shows or playing other social media because with this, you will have full control to prevent and divert your child's vision when there are shows that smell of gambling.
Or yes, it can also be like what you suggest where we divert a child's attention to many other things that are physical actions such as outdoor activities whether it is exercising which can indeed be healthy and improve a child's fitness. On the other hand of course directing a child to more positive things is a good action that will ultimately create good habits for themselves.