Basically trained by Microsoft's investment [1]. This fits with the parent commentator's thesis, which I also agree with.
There hasn't been a significant effort to enforce antitrust in the software domain since United States v. Microsoft Corp in 2001, and we are seeing the consequences.
No one is arguing that there hasn't been any innovation, just that it's by the same 5 or so companies; and that there could probably be more if there was more competition.
