I think that there’s quite a bit to be said for the ability to abstract something like labor and turn it into a common resource that can be utilized by anyone- if I need to buy a Japanese computer part from a very small manufacturing organization, that’s about the only way to make sure that all parties are seeing value in a transaction, seeing that there’s no guarantee that I have anything they would want or need, and I may never interact with them again.
I agree, we can for sure improve on the concepts involved, but that doesn’t mean that they’re accidental, and there’s a reason that the system was even marginally successful.
I think like, evolution is a great example of a similar process - the biological functions formed by evolutionary processes aren’t intentional, because intention implies cognitive processes that a natural law isn’t capable of; but they do serve purpose. They aren’t accidents, because the system is by its nature iterative and of course something would work eventually. Is there a theoretically more efficient structure than the one that we currently have for the human heart? Sure! That’s just not the structure that evolved through selective pressure.
Again, not to say we shouldn’t try to improve on systems of economy and government, but more to say that there’s still lessons to be taken from what we currently have; it worked in some small way, which means we probably wouldn’t benefit from throwing the baby out with the bathwater, so to speak.