Not at all. It may not be optimal for certain reasons to use USD, and they'd lose some advantages, but there are others to be gained that might make it worth i

Not at all. It may not be optimal for certain reasons to use USD, and they'd lose some advantages, but there are others to be gained that might make it worth it. To the extent there are no real capital controls on USD anywhere - and - the US Fed is separate from the government, then nobody is going to be a 'colony' of the US by using USD.