We cannot confiscate or retrieve the funds of the criminal because he has a shared bank account
Even ISPReview has to admit: It should be said that some ISP filtering systems have the ability to identify whether a requested IP address is attached to a specific website (i.e. the site intended to be blocked), which prevents the wrong site being blocked.
CSMG Study into Websites Sharing Internet Protocol Addresses (PDF)
http://stakeholders.ofcom.org.uk/binaries/internet/websites-sharing.pdf
