Is satellite more likely to be available during a SHTF situation? For example, consider a major earthquake. I'm thinking that it's likely that cable will go completely out, whereas satellite is likely to be still operational assuming I have power. Are my thoughts generally correct?

For satellite, my main provider is DirecTV. For cable, my main provider is Comcast.

I'm getting sick of Comcast because they can't fix the reception problems at my house. Ever since cable switched to all digital, there have been reception problems. So, I'm working up the motivation for going through the trouble and switching to satellite.