well, this is what someone in vrforums said:
The Japanese companies have to
request for the court order themselves, and that means getting
publicly involved either by making it official or sending a
representative. This is both time consuming and costly, and the
press will probably cover it as well in Japan. It's not the kind of
PR the companies want.
On top of that, how are companies like Bandai going to answer when
asked why Bandai USA is supportive of (or at least, neutral to)
fansubs in the US but cracking down on them here? Is it because
Bandai USA spoke on behalf of the fan community there, whereas
their representative here (Odex) painted a negative pictre just so
to explain away their poor sales? I hope this isn't true, cos that
would speak volumes of Odex's "commitment" to fans here.