I think the key point here is not whether Google is abusing its effective monopoly willingly, its that it exists at all. There may be alternatives, but not viable ones.
Try not supporting Chrome or ignoring Chrome requirements such as security mandates, you will go out of business. You can say these are 'good' for the consumer but the fact that Google has the ability to unilaterally change the web itself is partially the issue, they are not a standards body.
Whats the viable alternative to Google Search? Sure you can use Bing as a customer, but if you're a website operator you HAVE to stay on Google's good side. (not always easy to do)
Whats the viable alternative to Adsense? Especially when it comes to many Geo's that are hard to monetize.
Whats the viable alternative to Android?
Not all aspects of Google's business are so dominated, but where they are, you have little choice but to go with Google and the fact that are dominate in so many key segments is troubling.
Let's be honest, it's not like Google makes themselves easy to contact, interact with, or get support from. They are in many ways a black box.
Ever notice how the transparency reports for Safe Browsing never includes Google Properties or how they are happy to report DMCA issues for the internet, but never for Youtube?