In this particular case it's pretty clear the MPAA and the AG were both out of bounds. Why would the AG, the top lawyer for the state government (and supposedly for the people), need to help the MPAA with a smear campaign? According to Google, AG Hood's office supplied a proposal to the MPAA [2] with an editorial suggesting slumping stock prices, media segments in collaboration with the AG, regulatory lawsuits...
This is a conscious, targeted attack against Google because Hollywood didn't get its way. The project was even codenamed "Project Goliath" (related to the MPAA & affiliates, not the AG) [3].
Google has the resources, capability and will to vigorously defend itself where others may have not.
[1] https://w2.eff.org/IP/P2P/MPAA_v_ThePeople/ [2] https://s3.amazonaws.com/s3.documentcloud.org/documents/2179... [3] http://www.theverge.com/2014/12/12/7382287/project-goliath