[Arainach]

>It's not like they even have a real anti-competitive "moat", and yet no one is building a competitor.

They absolutely do. Their market share means that you must sell on them or lose a massive amount of sales. To sell on them you must agree to their anticompetitive price controls - must give them a cut, can't sell cheaper elsewhere. To get good product placement you have to agree to cominglinging and allow your legitimate product to be mixed with counterfeits.