The reason it doesn't specify what state that ready markers come into play in is because they're not really a thing that's in the game themselves. They're just a tracking method to keep tabs on whether or not something is available. As soon as you put a card into play, the effects of that card come into play as well. They're immediately available and if you are tracking them with a ready marker, this means the marker should be ready.
This isn't really about the ready markers though it can be discussed in terms of the state of such markers. Rather it is more about which object has and keeps track of these limited use abilities. Is it the object giving the ability, or the object receiving it? If it's the former, then we're saying that spells like Akiro's Favor can only be used once per round period, and moving them doesn't let you use them again. This would be consistent with the previous Defense ruling. However, an argument could be made for the latter, saying that the spell gives THIS creature a once per round ability, and when you move it it then gives a different creature a once per round ability that it hasn't used yet.
To put it another way, in terms of ready markers, the question is more about whether the object providing the ability hosts a ready marker itself to track the ability, or does it instead give a ready marker to it's target to track it. If the former, then when the granting object is moved it obviously carries the ready marker with it and the state of the marker doesn't change. However, if the latter is true, then when you move the granting object you would essentially be deleting the first ready marker off the original target and placing a new one on the new target. Does that make sense?
I could see either being true, but I'm not sure how to reconcile the latter with the previous ruling on Defenses. Thus, I lean towards the first option being true, where the object granting the ability is the one that keeps track of it. Regardless, it seems to be a blank spot in the rules which I think needs addressed.