Internet Explorer 6 was dominating the web. Was it best too?
Microsoft, just like Apple, engaged in anti-competitive practices that prevented user choice.
The solution to both of these situations, is either the courts force apple to allow user choice, just like it forced Microsoft, or for new laws to be created to do something similar.
Microsoft was literally brought to court, and a judge said that their practices were anti competitive.
So yes, the legal system said that Microsoft was anti-competitive.
You should go read up on the court case, because it is an absolutely true fact that a judge ruled that Microsoft engaged in anti-competitive practices.
And now there are new laws, in the EU, that will prevent Apple from engaging in anti-competitive practices as well.