Of course should they gather any data they will have to inform the person they suspect of copyright infrigement of the data they have gathered as otherwise they are in breach of EU data directives.
It seems as always the pro copyright lobby have greased a few palms so their paymasters can rip the rest of us off with overly broad copyright time frames and restrictive monopoly licencing, and they wonder why folks have no respect for such economically created laws that are sold as tax revenue generators to the govt and "for the ppor artists" to the public but those multinational groups pushing for such laws and agreements are the real beneficiaries, we all know the numbers 90% to the fat cats and 10% if they are lucky to the artists, the fat cat middle men really need to go on a diet.
Folks need not be threatened, they will pay a fee with pride as long as the price is fair.