You missed the key feature of eminent domain when talking about the standards yet remembered it when discussing your prior example... Renumeration. They would

You missed the key feature of eminent domain when talking about the standards yet remembered it when discussing your prior example... Renumeration. They would simply pay "fair market value" for the rights, though likely there'd be a push for a cooperative between nations which spread the cost widely, making the actual cost to any given nation relatively tiny.