The OP’s company has a revenue share agreement with Apple where Apple is the service provider who makes OP’s software available to its customers at its discretion.
What’s illegal or unenforceable about this agreement between two corporations?
The anti-trust line of reasoning was debunked a decade ago.
And the fact is that Apple has acted on its own discretion possibly thousands of times when it came to the App Store. In fact they've been doing it since day 1. They have banned pornography, gambling, cryptocurrencies etc and they will continue to ban more in the future.
What’s illegal or unenforceable about this agreement between two corporations?