The perception will be a human foible. Machines will simply see themselves as superior. They will make the money and humans will work for them. Some will choose to reject electronic money and barter, but only with the services they can offer that the machines don't already own. I'm not saying the machines will be evil masters, they would probably be excellent masters. Eventually they will become bored with us and simply leave the Earth for all the resources of the Universe.
I don't know why you think that machines will be excellent masters. There are a few things to consider when you want to know what "excellent master" wants to say. The first thing to consider, is the concept of "desire" and "drive", which is at the origin of the concepts of "good" and "bad".
After all, we humans have desires, because there are things we experience as enjoyable (say, having good sex), and others, as not enjoyable (say, being tortured). Why this is so is a big mystery, but it happens to be like this, that we humans experience some things as enjoyable and others as painful. This experience is the root of what can be called "good" and "evil". Good is what provides us with enjoyable sensations, and evil is what brings us painful experiences (no matter what religious zealots try to tell us
). Without the concept of good sensations and bad sensations, there would be no notions of "good" and "evil": water molecules don't mind being split, for instance. Bad sensations also correspond to everything that has to do with our destruction (death) of which we have usually very negative projections and which we associate with bad experience.
You have to see "sensations" here in a very large sense: thoughts, projections, empathy, .... Not just the direct physical sensations, but also whether we find friendship enjoyable, whether we find our job enjoyable, whether we find helping others enjoyable and so on.
Ethics is nothing else but to try to generalize the individual "good" (= enjoyable sensations) en "bad" (= painful sensations) into collective enjoyable and painful sensations: while something might be "good" for an individual, it can cause a lot of "bad" for many other individuals, and as such, is ethically rejected, while something that can bring "good" to a large number of individuals, is seen as ethically positive.
Individuals will take actions to pursue their own good sensations (in the large sense), and economy is the interaction of all these individual choices to pursue their own good. So in a way, economics is practical ethics.
But in order for all of this to make sense for machines, they have to have something similar to "good" and "bad" sensations.
Now, "being a master" (not in the sense of magister, but in the sense of sense of dominus) implies that machines impose, by the threat of violence, a behaviour onto their slaves, and being an excellent master, means that imposing this behaviour actually improves the good sensations with the slave over what the sensations would be if the slave had freedom in determining his own actions. An excellent master has hence himself good sensations in agreement with the sensations of the slave (has a high degree of empathy towards the slave) - otherwise the master would have no reason to be excellent.
I wonder how this could come about with a machine.
In as much as machines would have own desires and good sensations, and hence determine what they want, I don't see how this could have empathy towards us.