Sorry but I believe in a religious way that an hardware vendor should not have the power to enforce what software can run into a device. Like a bike vendor can't force you to only use your bike in a limited number of streets.
That metaphor is wrong. It isn't illegal to jailbreak an iPhone, it just voids the warrantee. You can run any software you like on an iPhone.
A company should have the right to control the user experience offered for a device that it designed and manufactured. That will mean denying a third party's right to bypass those controls.
The user has the right to do anything with the device once they've bought it.