> Google advocates for things that are generally in the public interest and does not abuse those position as many companies of their size do.
Yes, they do that now.
What about in the future? There's no guarantee that they won't start lobbying for things which entrench their monopoly and help their business while harming consumers.
Just look at Google Fiber. At one point in time it seemed they might actually disrupt incumbent providers like Comcast, but they figured it wasn't in their interests and mothballed it.