That's not the issue. They have a monopoly on phones that show high social status in many areas, and they use anticompetitive practices to protect it. Including deliberately ensuring that their messaging systems are not compatible with Android.
> Including deliberately ensuring that their messaging systems are not compatible with Android.
That's not anticompetitive, messaging systems are not entitled/obligated to be interoperable in US.
Apple is within its right to set standards for its networks/services that are restricted to their customers. That means they can restrict access all they want.
That's why Twitter and Reddit is getting away with all the BS they've done in the past year or so by restricting APIs and charging high prices for them.
If we want all services to be interoperable, then we have to start by passing regulations just like EU just did with DMA (without small company restrictions since Messages is likely to be exempt due to low usage in EU).
I would also remind people that you don’t have to have a pure monopoly to do things that are illegally anti-competitive.
E.g., as I recall, a company can’t explicitly state their reason for acquiring a company being to reduce competition. Certainly it happens all the time but you can’t come out and say it on the record.
(I don’t know if this issue is something that is illegal or not)
Beeper is just one example of that.