The thing is, it can be argued that they're hurting others with their decision making because of their dominant position in the market. Apple and Google effectively have duopoly on the smartphone market. Apple's position on game streaming apps is an example of the ability to hurt others.
True I guess, but what's to stop another developing a competing app store or similar. Before the App Store or the iPhone, there were other options for buying a smartphone or installing software but Apple decided they could do it better and went ahead and did just that. It's hardly their fault that nobody else wants to take up the challenge and compete against them, or Android for that matter.
Historically, we've seen it many times before when a company has been able to compete against the best of the best and win. It's the cycle of business. As with Apple, it's unlikely they'll stay at the top forever, someone else will come along and displace them at some point.