I think "Contact Support" is a fine answer when appropriate - if it's a known problem that can only be solved by contacting support, then hey, that's the answer. Sometimes people ask questions with simple answers, and that's okay.
Closing questions because the answer is "seek support via the official channels" is problematic, however. If the answer is something that is obvious - then downvote the question.
What if there's a workaround that is discovered? Isn't that useful information that people should be allowed to post as an answer? What if "contact support" isn't an obvious answer - in some cases defective disks cause game bugs and the best solution is to call the company and get a replacement. This is not a bad question, or one that does not deserve an answer.
Close the question if and only if allowing it to be answered would be bad.
"I'm getting this particular error X every time I try to launch the installer" - The answer may be "contact support" in the FAQ for the game at the company's website, in which case we'd say contact support. If this is something that shows up immediately in a google search or so on, you might opt to downvote.
"I need a CD key/install files for game X because I lost mine" - Contact support is the correct answer, but leaving this open might encourage people to post pirated serial numbers or other shenanigans, so close it.