1. As far as I can see, there is no basis in fact for his claim.
2. Google is showing every sign of not being greedy, by abstaining from selling positioning, and having very unobtrusive advertisements. They have also changed their algorithms in the past to overcome exploitation, so one may assume that this is a matter of policy with them.
3. The crowd to which he presents his case is, in general, pro-google and anti-microsoft. So this would be the perfect place to place a troll that says "why shouldn't Microsoft overtake google?"

So there it is. Sounds like a troll to me.