You've got the right idea. If you think about how services on the internet operate, they don't have one way of implementing their internal processes, either.
I finally got the idea, after listening to Kay for a while, that even what we call operating systems should be objects (though, as Xerox PARC demonstrated many years ago, there is a good argument to be made that what we call operating systems need a lot of rethinking in this same regard, ie. "What we call X should be objects."). It occurred to me recently that we already have been doing that via. VMs (through packages such as VMWare and VirtualBox), though in pretty limited ways.
Incidentally, just yesterday, I answered a question from a teacher on Quora who wanted advice on how to teach classes and methods to a student in Python, basically saying that, "The student is having trouble with the concepts of classes and methods. How can I teach those ideas without the other OOP concepts?" (https://www.quora.com/Can-I-explain-classes-and-objects-with...) It prompted me to turn the question around, and really try to communicate, "You can teach OOP by talking about relationships between systems, and semantic messaging." If they want to get into classes and methods later, as a way of representing those concepts, they can. What came to mind as a way around the class/method construct was a visual environment in which the student could experience the idea of different systems communicating through common interfaces, and so I proposed EToys as an alternative to teaching these ideas in Python. I also put up one of Kay's presentations on Sketchpad, demonstrating the idea of masters and instances (which you could analogize to classes and object instances).
I felt an urge, though, to say something much more, to say, "You know what? Don't worry about classes and methods. That's such a tiny concept. Get the student studying different kinds of systems, and the ways they interact, and make larger things happen," but I could tell by the question that, dealing with the situation at hand, the class was nothing close to being about that. It was a programming class, and the task was to teach the student OOP as it's been conceived in Python (or perhaps so-called "OOP". I don't know how it conceives of the concept. I haven't worked in it), and to do it quickly (the teacher said they were running out of time).
The question has gotten me thinking for the first time that introducing people to abstract concepts first is not the right way to go, because by going that route, one's conceptions of what's possible with the idea become so small that it's no wonder it becomes a religion, and it's no wonder our systems don't scale. As Kay keeps saying, you can't scale with a small conception of things, because you end up assuming (locking down) so much, it's impossible for its morphology to expand as you realize new system needs and ways of interacting. The reason for this is that programming is really about, in its strongest conception, modeling what we know and understand about systems. If we know very little about systems that already exist, their strengths and weaknesses, our conception of how semantic connections are made between things is going to be very limited as well, because we don't know what we don't know about systems, if we haven't examined them (and most people haven't). The process of programming, and mastering it, makes it easy enough to tempt us to think we know it, because look, once we get good enough to make some interesting things happen (to us), we realize it offers us facilities for making semantic connections between things all day long. And look, we can impress people with that ability, and be rewarded for it, because look, I used it to solve a problem that someone had today. That's all one needs, right?...
Kay has said this a couple different ways. One was in "The Early History of Smalltalk". He asked the question, "Should we even teach programming?" Another is an argument he's made in a few of his presentations: Mathematics without science is dangerous.