Apple has done a lot to revise the App Store charging policy over the last few years, and I think they deserve credit for that. Also their hosting of free apps for only a nominal developer registration fee is a huge boon to users and a lot of iOS developers.
So I don’t think those criticisms are entirely accurate or fair. I am ok with regulators looking into this though. Apples revisions to their charging structure probably wouldn’t have happened without the threat of regulatory review. It’s important they be held accountable. However Apple invested many, many billions of dollars to develop the technologies in iOS over many decades and took huge commercial risks. iOS and these devices are their product and they have the right to decide how they work and what features they have. Those who don’t like that do have alternatives. The fact is an awful lot of people do like the way Apple does things.