Because it's their property. Now you can try to make an argument that it's stolen IP and that matters in some way, but that's just more likely to ensure no one has access.

Even more so they are getting push back from the government (good job electing idiots) that said models are a security risks.

But until then the company can charge/give access to whoever they want for however much they want except in the cases the law says no.

And if you don't like it raise a trillion dollars and make your own.