So lets say that you are a very talented artist that get a job to NCSoft..and you are starting working for years on a project and YOU create some very beautiful artwork..of course the company that hired you put the name on this artwork because this is how companies work...
one day the company, some monkeys with lots of money and zero talent, fire you and cancel the project but they claim all your work...
you take your work of years and you leave...
illegal with human laws(I mean company laws, since politicians are their pets)? yes
illegal in simple human eyes? NO
thats my opinion..these people worked hard and created something..they could simple recreated and not stole it..if I paint a tree and sell it to you, does that mean that it's illegal to paint same tree again?