If they have network block storage you would likely be correct, but afaik they also give you emphemeral storage that is local to the hypervisor which is not net

If they have network block storage you would likely be correct, but afaik they also give you emphemeral storage that is local to the hypervisor which is not network block storage and therefore makes it very very hard and very very slow to migrate you around automatically (ever tried transferring a 20GB+ file around, ya, it takes forever...)