The Mini is small enough that people will consider adding it to their living room consoles. The transition of bringing the computer into the living room won't happen overnight, but this is a good first step.
There's a whole lot of reasons why people choose Windows or a Mac. It's not as if one getting delayed slightly is suddenly going to cause you to switch platforms.
Cisco wants people in the entertainment and computing industry to understand that they are the way to get something from point A to point B over the Internet.