@Motherdare
I wish it would all be banned. As in totally illegal to post sexual images or video on the internet, a punishable crime. Let it all go back to dirty videos and magazines that people have to get mail-order or from a bloke down the pub. As a society we have allowed this filth to infiltrate all our lives and rot young people’s minds. It is so disgusting.
Easy to ban it. Much harder to enforce the ban. A law has to be enforceable otherwise it's pointless. We're in a global connected World now, and no single country can dictate what laws/enforcements should be in other countries.
As we see with tax avoidance/evasion, money laundering, arms/drugs, etc., when multiple countries are involved, and some are less keen on law/enforcement than others, people can get away with pretty much anything, if they know which countries are more "sympathetic" to their needs, such as tax havens, countries known for drugs/arms, etc.