In the last 15 months, several of the biggest anonymous websites on the Tor network have been identified and seized by police. In most cases, no one is quite sure how it happened.
The details of such a campaign have yet to be revealed. With enough funding, Tor could have developers focusing their work entirely on hidden services, a change in developer priorities that many Tor users have been hoping for in recent years.
Often statistics are used as a drunken man uses lampposts -- for support rather than illumination.