I don't really think so. You just swapped the term king to Oligarchs. In fact the Oligarchs are even worse because people think that they have freedom when they might not in fact have such freedom in the first place.
I don’t have an opinion on if it’s worse or not because some people mistakenly think they are free.
I meant that from the perspective of how market forces play out, hyper concentration of wealth into a few actors looks the same whether the title of the those actors is “king” or “oligarch”.
You start losing the wisdom of the crowds effect the market gives if you have a handful of people making the decisions for the entire market