Something can be both "good business" that is make you a lot of money, and a terrible thing for society.
There's an incredible amount of effort to prevent that - we can start with obligatory things like slavery, but there's a lot more - safety regulation in cars or airplanes, food safety, various environmental protections, employee protections, and so on.
"I want the iPhone and App Store to be a closed system." is kind of like saying "I want powerful car that doesn't have to follow emission limits." - I believe you that you want it, but you having it might hurt others, and that's why it's not allowed.
There's an incredible amount of effort to prevent that - we can start with obligatory things like slavery, but there's a lot more - safety regulation in cars or airplanes, food safety, various environmental protections, employee protections, and so on.
"I want the iPhone and App Store to be a closed system." is kind of like saying "I want powerful car that doesn't have to follow emission limits." - I believe you that you want it, but you having it might hurt others, and that's why it's not allowed.