There are a lot of ways for them to monitor their children's internet activity. They should really utilize those if they wanted to take care of their children. Also, they can just increase their children's literacy when it comes to finance.
That's what I do. I buy an annual subscription to the 'Kaspersky Safe Kids' program, which can be installed on any number of computers, phones and tablets. This program has huge possibilities.
Disclaimer. I am not publishing its name for advertising purposes. It may help some parents to control their children.
You can also activate a safe search in your browser to prevent something that you don't want your children to see. And with the Kaspersky Safe Kids and Safe Search in your browser, your children can help your children stay away from porn or gambling or other things that your children don't deserve to see. We can do many ways to prevent or monitor our children's internet activity because I think we cannot always watch them browsing the internet. If we can take care of them, we can tell them about that thing, so they will know that they are still children who don't need to know more about that.