The short answer is: Apple would give away control of their products if they did.

Enterprise/Corporate/Govt all have tedious amounts of niche needs and requirements to endlessly grow.

Can’t find the quote as I’m on my phone, but when a former exec from Apple left and joined a corp, and asked Steve if he wanted to expand to corporate, he said he won’t stop him, but he isn’t going to help him either. (I’m sure I butchered it), but something like that.

Remember, IT = Control.