Lets take a step up the value chain: Qualcomm also literally built their dominant position in 3G/4G/5G radios from the ground up. Is that more than sufficient justification for them maintaining as much control as they please? Because I remember Apple being pretty peeved about having to pay a % rake to Qualcomm, complaining that it was unfair.
You could repeat that for any product that has a dominant player somewhere up it's value chain.