Giving preferential treatment to one customer at the expense of other customers is not anticompetitive behavior as defined by any law I'm aware of.
The law doesn't say you have to give everybody the same deal just because it's "unfair" to others.
The monopoly/antitrust/etc. laws are about misusing a position of power for your own benefit at the expense of competitors. Apple doesn't have to be "fair" to Netflix vs Max vs Disney Plus.