Yes. It's only becomes an issue if they're using that to an anti-competitive end.
What type of content will Apple be allowed to ban on its store? Do you want the government telling Apple what they have to allow third parties to access on thier OS? Should the government tell them that every developer should have root access? Access to the Secure Enclave?
And do you want to set up a “government app review board” to decide on a case by case basis when Apple is denying an app for “competitive reasons”?