Yes. Two of them (Google and Facebook) basically control a huge fraction of the information people are exposed to on a daily basis, either directly on indirectly. They're so dominant and aloof, that they can make or break businesses without even realizing it or caring. Their control over information flow also has important civil society implications.
Amazon could conceivably control most American retail activity in the future, though it has a few retail titans that could conceivably stand up to it if they get their acts together [1]. At best, we seem to be headed towards a retail oligopoly.
Personally, I'm much less worried about Apple, its control is much less pervasive. Though I wish there were more alternatives to it other than Android.
[1] https://www.fool.com/investing/general/2016/01/01/amazon-is-...