You do realize that the word "similar" does not mean "identical" right? That they are not synonymous?
Of course it's possible for someone to have a similar looking theme. Every single CMS out there, and every single forum system out there, has themes that are similar to others. Certain sites and styles inspire others and give them ideas to create sites and styles that are similar. The frontend of IGN is using a News style CMS. Over at Themeforest, there are plenty of similar styles to that front end. Over at Rockettheme.com there are plenty of Joomla styles that are similar as well.
No one is asking for an
identical looking site with
identical features. What I said I'm looking for,
is something with a similar look. And coming up with a similar look is not beyond the possibilities and capability of someone who knows how to theme.
The look that sets apart IGN's XF theme is merely the header and the footer. They don't seem all that complicated (to get something similar). It's silly to me that because an organization has millions of dollars...somehow...it prevents creative people from coming up with similar looks or tweaking their header and footer. Doesn't make any sense.