First two questions: so far, they haven't removed anything that anyone would feel sorry for. That is not relevant to the point: even Standard Oil or Bell were ordinary, non-predatory businesses for some time.

Last question is more relevant: there are vague suspicions of them planning to monopolize the market, but the bigger question is: whoever gave them $25 billion to piss away is expecting some solid returns on that investment, so they will need to find a way to extract that much, and more, from their users (on top of their current revenue stream). The concern is that it's hard to imagine a positive scenario of extracting that much money from a market that is getting pretty well established by now.