There is no current iOS version of Fortnite. The only way to do it is with Amazon Luna or Xbox Cloud Gaming, which is only "playing Fortnite from iOS" on the very surface.
It's not there anymore but it was there originally. (It'd be amazing if it still were. If you were allowing me to sell my game in your store for a fee, and I stopped paying the fee AND sued you, you'd remove me from the store first thing. First to avoid funding my legal expenses and second because I agreed to your ToS that allow you to do it literally for any reason you like.)
After it was removed, Epic found out that people who were casually playing Fortnite on iOS were not about to start buying PCs and gaming consoles. After all there are other games in the store, including tons of buy-once-play-forever games which don't leech money off you or your kids like Fortnite does.
> More than 116 million registered users have accessed Fortnite through iOS -- more than through any other platform, Epic said in the filing
https://www.bnnbloomberg.ca/fortnite-users-flee-after-gettin...
Market. It's capitalism, you know.
They provide users to devs (e.g. in case of Epic most people played Fortnite from iOS) and they provide apps to users. If they jack up the price and devs quit, the deal stops being attractive to users because there's not enough apps so Apple risks losing users unless they make selling apps appealing to devs again.
> Look what they did to Spotify with Apple Music. They absolutely abused their ownership of the platform to stifle a competitor.
Everyone I know on iPhone is using Spotify except me so for me it is hard to see who is stifled exactly...