> Apple does not have a “monopoly on iPhone hardware and iOS”. This is a fundamental misunderstand of the term. You cannot have a monopoly on your own product, because a monopoly is a state of a market and your own product is not a market.
Precedent deeply disagrees with you on this. At the supreme court level see Eastman Kodak Co. v. Image Technical Services Inc. To quote the first paragraph of wikipedia out of laziness: https://en.wikipedia.org/wiki/Eastman_Kodak_Co._v._Image_Tec....
> Eastman Kodak Co. v. Image Technical Servs., Inc., 504 U.S. 451 (1992), is a 1992 Supreme Court decision in which the Court held that even though an equipment manufacturer lacked significant market power in the primary market for its equipment—copier-duplicators and other imaging equipment—nonetheless, it could have sufficient market power in the secondary aftermarket for repair parts to be liable under the antitrust laws for its exclusionary conduct in the aftermarket.[1] The reason was that it was possible that, once customers were committed to the particular brand by having purchased a unit, they were "locked in" and no longer had any realistic alternative to turn to for repair parts.
This has been held at the appeals court level to apply to products as well as repair services (because why wouldn't it). See newcal industries v. ikon office solution. Unfortunately since a large portion of the opinion focuses on this, it's hard to find a single quote that summarizes. Read the background and then search aftermarket in the opinion: https://www.leagle.com/decision/20081551513f3d103811540:
Here is my best attempt at picking out a relevant paragraph that explains the law:
> Taking these cases together, three relevant principles emerge. First, the law permits an antitrust claimant to restrict the relevant market to a single brand of the product at issue (as in Eastman Kodak). Second, the law prohibits an antitrust claimant from resting on market power that arises solely from contractual rights that consumers knowingly and voluntarily gave to the defendant (as in Queen City Pizza and Forsyth). Third, in determining whether the defendant's market power falls in the Queen City Pizza category of contractually-created market power or in the Eastman Kodak category of economic market power, the law permits an inquiry into whether a consumer's selection of a particular brand in the competitive market is the functional equivalent of a contractual commitment, giving that brand an agreed-upon right to monopolize its consumers in an aftermarket. The law. permits an inquiry into whether consumers entered into such "contracts" knowing that they were agreeing to such a commitment.
So I don't think it's a slamdunk whether or not Apple's secondary markets here are aftermarkets that anti trust can be applied to because of the third point in the above paragraph, but it's not a slamdunk the other way either, and your claim that you can't have a monopoly on IPhone apps because IPhone is apple's product is fundamentally flawed (rather, if it's true, it's because purchasing an IPhone is akin to signing a contract that you will only use IPhone apps distributed from Apple, and that you will only use Apple's payment system on those IPhone apps).