I think it would be foolish to assume google hasn't spent hundreds of hours in meetings talking about what they can do about everyone having to type reddit. Problem is they are facing an army of SEO experts who are one step ahead of google. As well as legal issues. Imagine if it was found google was artificially boosting reddit in an unfair way.
This is Google we're talking about. They could very easily conquer the SEO experts the same way they basically eliminated spam and most web browser exploits.