They should have known or been monitoring the situation, especially after Apple's findings/blight. Ignorance on how your multi-billion dollar flagship home entertainment product is produced sounds like someone who should be out of a job.
I bet that Sony probably don't know, and at worst just turn a blind eye. My guess would be that Foxconn's unofficial position is "fine, the uni/local government wants to throw a bunch of free workers at us, and doesn't care a bit how we use them", and the local gov/university are the active partners.
Do you think Sony execs could have researched and performed checks themselves to make sure this kind of thing wasn't happening? Do you think "built by slave labor" might affect their brand?
