Their intention doesn't matter. Companies can strive for a monopoly without breaking rules. The point is that at this moment, they don't have it and there is high competition (although oligopolies) in both mobile and desktop preventing them from having a platform monopoly.
Your comment that I replied to, didn't talk about intentions, and neither did I.
You said "Microsoft owned the whole stack" (OS, Office Suite, Browser). My response is, that Google is trying to achieve the same thing: The blurred O/S+Browser that is Chrome, and browser based software like Google Apps.
You're right, that what they intend to do with said monopoly is not relevant to that specific point. The point is that both saw an advantage of some kind that made it worthwhile having control over a large portion of the software their user's ran.
Where it does matter though, is that in the Microsoft monopoly, it was a monopoly of defaults and business contracts only. Nothing technically prevented someone from installing a separate browser, a separate office suite, etc., on their computer.
With a Chromebook, which Google is pushing heavily in education, what options do you have when it comes to installing an office suite? What options do you have when it comes to installing a different browser?
If your answer is "Android Apps", I suggest you read up on Google's own docs, which show that just 10% of devices support that functionality, only 7% support it without using a Beta.
