Imagine that situation. You buy a computer. It comes with one web browser pre-installed. You can’t install a different web browser on your computer.
You wouldn’t stand for it! I mean, Microsoft got fined for anti-competitive behaviour when they pre-bundled their web browser with Windows back in the 90s. You could still install other browsers, but just the act of pre-bundling was seen as an abuse of power. Imagine if Windows never allowed you to install Netscape Navigator?
And yet that’s exactly the situation in 2020.
You buy a computing device from Apple. It might be a Macbook. It might be an iPad. It might be an iPhone. But you can only install your choice of web browser on one of those devices.