[JohnFen]

> To me, it's just like any other data, licensing it to someone is no different than licensing the source code to something you wrote

I agree with this. It's your data, you're free to license it out in any way you choose.

> if it's revokable the whole concept doesn't make sense, and you don't really own it so much as it's held in trust by the state.

I don't understand this. How does your ability to revoke a license you've issued mean that it's held in trust by the state? Revocability underscores that you own the data and can control what happens to it in the future.

By the way, almost all licenses are revocable.

> But it seems like some people see it as something really personal and special that inherently shouldn't be treated like any other commercial asset,

And those people aren't wrong. They're exerting their rightful control over their data as they see fit. If I choose to license my data out, I am also exerting my rightful control over my data as I see fit. There is no contradiction here -- in both cases, it's about consent.