No, no, back up a second. The argument being made in the parent comment is that once there is one entity with enough stake in the network to dictate where it go

No, no, back up a second. The argument being made in the parent comment is that once there is one entity with enough stake in the network to dictate where it goes, they can just pull out before tanking the network. But my understanding was that you can only have enough stake in the network to make decisions...by having that stake in the network. If you un-stake your crypto and cash out, by definition, you no longer have any stake in the network. If you no longer have any stake, how do you have a controlling stake?