And further, scamming people in the context of sex has always been easy because of the shame in admitting you fell for it.
Imagine filing a report that you spent thousands of dollars chatting with some random person, having the chat logs submitted as evidence, etc. it’s similar to why all types of sexual assault are rarely reported
The 'able' part is the critical insight. Laws are too often passed that really have no ability to be enforced, but end up adding bureaucratic processes that law abiding companies have to follow. This also implies that governments need to actively clean up existing laws, which almost never happens unless there is enough support to pass a new law to actively supplant the old one.
This is equivalent to saying "I don't think the problem is hard, it just requires an a simple solution that doesn't exist". Problems are hard problems specifically because simple easy solutions for them don't exist.
Maybe I can confiscate money paid for ad's or something, however that probably runs via a payment system outside my control.
So I have to punish my local companies advertising, but then it won't be my local branch of Coca-Cola advertising, but a foreign branch.
Enforcing this, without international cooperation, is tough. And currently international politics aren't in a cooperative phase for large parts.
I would argue that the reason has more to do with our utter inability to create common sense laws regarding anything "sex".
This assumes that the politician plans and has a chance to become re-elected. If this is not the case, the arguments for not advocating for such laws become much less important for the respective politician.