@campuscodi They've already factored in the cost of government enforcement. I don't have the exact numbers, but they calculated that at most they'd lose something like 10% of the revenue from the scam ads due to enforcement, so it was worth it to keep allowing them.
I'm not saying that governments shouldn't crack down on this, but I don't think we can expect enforcement to make a difference until laws are changed that make the enforcement actually meaningful, until then they'll keep exposing their users to scams, and they'll keep profiting, while paying a small enforcement tax.