You forgot another companies
don't remember BF3 fiasco?. (EA)
If everyone will be truly aware of risks of sensitive data/private data most of them will unplug the LAN cable or internet cable cord and try to avoid any type of *contact* with the internet.
It's not only Sony (and nope im not defending sony on this one) but personal data, etc when you enter the interwebz you know the risks and they take for granted that you know the rules of this *game*.
So the ones *unbanning* themselves they are sending more results to Sony HQ than they need (and have). It's like using ONE key to open 10 doors at the same time or in fact use ONE key that opens those 10 for a little while, then you are ****ed.
Even being OFW like you said or indeed owning a Sony product you are more exposed than you think.