'Harmful' is a pretty strong word. No longer the underdog and dominating in business issues related to search maybe, but I have a hard time seeing how this cause harm in any tangible way. Do you have some examples of how a lot of people might find Google to be causing harm?
Google has been known to connect to wifi hotspots without permission using their mapping cars. Not only did they connect to people's wifi, they also took dumps of any unencrypted data they happened to find while they were connecting. They only got rid of the data after a lawsuit forced them to.
They had terrible privacy settings on Google Buzz, letting anyone you had any email conversations find out where you've checked in to.
They're the only mobile OS maker who will not put a proper update system in place, leaving millions of their users without patches. Google is unapologetic about this, even going as far to say 4.4.4 is out of support and users should upgrade to 5, even though most Android handsets are incapable of upgrading. Serious security flaws exist in older versions, and the systems will never be patched.
Let's talk about the anti-poaching agreement they had, hurting not only their staff, but all of IT in general.
Google is the only huge company I know of that still believes it is a startup that can get away with anything, including breaking the law. I have nothing against the people at Google, they do amazing things. But the company needs to learn the value of corporate responsibility sooner rather than later.