I'm not sure that says much about this as a marketing tactic.
After all, it's likely that all their conventionally distributed albums were pirated in similar numbers. (It seems that copy protection never stops piracy, it only stops people who buy legal copies...) So I don't see how this would make things worse for anybody else trying to do the same thing.
-Morgan."Mikuru-chan molested me! I'm... so happy!"
-Haruhi, "The Ecchi of Haruhi Suzumiya"
---(Not really)
After all, it's likely that all their conventionally distributed albums were pirated in similar numbers. (It seems that copy protection never stops piracy, it only stops people who buy legal copies...) So I don't see how this would make things worse for anybody else trying to do the same thing.
-Morgan."Mikuru-chan molested me! I'm... so happy!"
-Haruhi, "The Ecchi of Haruhi Suzumiya"
---(Not really)