[tripzilch]

"""Market dominance is, as such, not illegal under EU antitrust rules. However, dominant companies have a special responsibility not to abuse their powerful market position by restricting competition, either in the market where they are dominant or in separate markets."""

It's not about "punishing" but it is about holding dominant companies responsible for handling the great power that comes with this dominance.

Companies don't usually do this by themselves because like you say, their goals are orthogonal to this.

Doesn't mean it's contrary to their goals (which would be "punishing", in a sense), but "commercial success" or profit just isn't a force that drives ethical behaviour and responsibility. It's not. Things would be so much easier if they were.