Even with an iPhone, you have the right to flash whatever firmware you feel like. This has been upheld in US Supreme Court cases. Apple simply is under no oblig

Even with an iPhone, you have the right to flash whatever firmware you feel like. This has been upheld in US Supreme Court cases. Apple simply is under no obligation for it to be easy for you to do so. Jailbroken iPhones aren't illegal. Apple treats them as a security risk, since mechanisms for jailbreaking iPhones exploit security flaws in order to get root-level code execution. I can't say they're wrong to do so! It's no secret that they do. Or that Apple doesn't ship anything but iOS to an iPhone, or that you won't be able to install apps from outside the App Store. These are marketed as features. Most people are interested in solving a task, and their device helps them with this. They are uninterested in general-purpose computers. And there's no shortage of them for the rest of us! Android devices are the obvious choice here, with their user-exposed flashable ROMs. (Not just the OS, but every ROM is exposed through fastboot) Or PinePhone. Or whatever Firefox is doing. You've got choices for tinkerers and general-purpose computation, it just doesn't live in a device with an apple logo.