Siegel and Shuster lost complete and total control over Superman when DC bought the rights. Once the rights were signed over, DC basically gave them the finger and showed them the door.
By author, I meant the guy who initially wrote the article. Cap America went through this when president Clinton said he could no longer be Cap America--Cap thus became Expatriate, or 'The Man Without A Country'. Had a pretty lame outfit, looked like an american Zorro without the hat.