a) Phone is not considered by most people to be a computer.

b) I can't install anything I want on my PS4, Switch, Tesla, Shopify store etc.

So actually Apple isn't the outlier at all.

But you don't have to buy an Apple phone.

yeah, I get that, and the only reason I picked an iphone for my grandpa is because it's a curated closed platform. i'm glad it exists as an option, and it's not the most popular one, but it seems insane to make it illegal to create a closed software platform