User blog comment:TW6464/Omega has been Confirmed!/@comment-2250460-20120923144012/@comment-2127131-20120923165645

I think Cerberus did convert it to a research station. And plus has the Alliance actually help Shepard directly (Ships or Troops) in his mission before the taking Earth back? Other than giving intel and funding, they don't really do anything to help Shepard.