And that’s how Apple makes its products more competitive.I thought companies were complaining, among other things, that Apple applies different rules for their apps and for third party apps and allows different APIs to be used for their apps and for third party apps. If the level playing field isn't fair, it's hard to have competition.
It’s like how Samsung gives itself access to its own screens to be more competitive, and how supermarkets give priority shelf space to certain products to maximise profits.
If companies are denied the ability to give their own products preferential treatment then the incentive to make products in the first place is diminished.
Apple does NOT stop new entrants from entering the smartphone OS market. Those entrants can also give themselves exclusive access to certain APIs so as to make their own products more competitive.