Primorge The examples were meant to be extremes.  In the case of self defense  the fact is it is still illegal, just that the penalty is will be waived because of circumstances.  You can not just kill someone and claim self defense without it being investigated, because if you could no one would be convicted of murder.  As far as the pictures the fact is someone does own the copyright.  Whether or not they are active is beside the point the proper thing the company should have done is sign a statement releasing the content into the public domain if they did not wish to keep the rights.  That is if they went out of business by their own choice.  If they filed for bankruptcy then their assets were sold off to pay debts and the person/company that bought their assets now owns those copyrights.  Whether or not you agree is not the point.  As I said before the proper way of doing this is to find the copyright owner and get permission or wait until goes into the public domain. 

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13