Killed by DPI? - "It is with regret that we announce the closure of Newzbin2"

A year ago a "UK Court Orders BT to Block Newzbin2 in 14 Days, Using DPI" (here) and the end result is that Newzbin2 is closing its service. Is this because of effective [law and] network policy enforcement or simply people are not ready to pay for such service?

Newzbin2 site (here) now says: ".. combination of several factors has made this the only option. For a long time we have struggled with poor indexing of Usenet, poor numbers of reports caused by the majority of our editors dropping out & no-one replacing them. Our servers have been unstable and crashing on a regular basis meaning the NZBs & NFOs are unavailable for long periods and we don't have the money to replace them.

Newzbin2 was always hoped to be a viable underground commercial venture. The figures just don't stack up. Newzbin1 was said to have had 700,000 registered users. In fact that was the total number of people who ever signed up in the history of Newzbin from 2000 onwards & only a fraction were active, loads of people dropped out & went to other sites. We reckon they had about 100,000 users and of those only a few 10's of thousands paid premium topups.That still made good money for the Newzbin1 guys. We never quite got the trust and lots of people said "Newzbin2 is an MPA trap", that stung us bad and we never got the userbase back. We don't have much more than about 40000 active users and the number of premium users is in the small thousands. It costs much more to run than we bring in, It just doesn't stack up"