There are plenty of reasons to beware putting too much faith in Google, but the primary reason given by this article appears to be "because they have a lot of services you find useful". Not sure how much I buy into that.
OP: Actually this is one reason but too many reasons are there, it might be not that much clear in my post. All the time I hear people from Google promote for open internet and open standards but on the other hand they violate too many rights when it comes to online identity and privacy. And in the same time I hear that a lot, "I can't drop Google as my primary search engine or Analytics etc..." I believe that we can.
You'd likely be better served by including a list of alternatives, if the goal is to show people they can in fact switch. Not everybody knows about DuckDuckGo or similar alternatives.