These media companies would be all over a technology that injected content via direct neural stimulation at an authorized retail outlet.

Or a technology that was a permanently sealed container containing the content that must never ever ever be shared. After all, if you can prevent sharing it 1 million times, that translates into pretty low false negative rate on preventing acceptable sharing.

Or a tax collected that covered 100% of estimated revenues "just in case".

Ads, however, are vitally important to our global economy and must be shared widely, as wide as possible.