Sure it is. Had this guy known his rights, he would have kept on going with his project, and nothing legal Square could have thrown at him could have stopped him. Hell, he would have even gotten money out of them.
Right, after wasting years of his life in a legal battle, spending all his money on lawyer fees, fighting a company with comparatively bottomless legal funds and of course, we all know that juries never make mistakes, especially when dealing with highly technical issues. He's a fool for giving up so easily!