Last year more than
1.25 million children in the US fell victim to cyber crime costing the families an average of more than $1.100 per attack.
Assume that most families are dysfunctional and cannot protect or teach their kids anything, otherwise we will continue to see these statistics for the next 10 years.
In situations like these, the browsers should step up and do something to fight this. Make an ML model of the users' browsing & clicking habits to identify whether you are dealing with a kid, or a grown-up. Then on all subscription pages, present a challenge to the user if positively identified as a kid (they can make it a physics or economics question for example, but never a "enter your password" prompt because if they stole the credit card, chances are they can steal the passwords from their dysfunctional parents as well).
They might even be able to wall the checkout page behind an IQ test