I don't think it's even true in theory since corporations live in a larger context of the country or countries they are in.
As for countries themselves, we could argue that they also live in a context of all the other countries, but I would say that for the reasonably large ones it is the case their political will is roughly equivalent to the collective sum.
As for countries themselves, we could argue that they also live in a context of all the other countries, but I would say that for the reasonably large ones it is the case their political will is roughly equivalent to the collective sum.