Oligopolies are unlikely in a free market because as soon as you do anything interesting a million other people will copy what you are doing wholesale and you will have no advantage to see you rise up to form an oligopoly. We find oligopolies in our regulated markets because regulation, such as copyright, patents, tariffs, etc., legally hinder that competition from emerging.
However, even if we accept oligopolies as inevitable, that doesn't mean the tech people cannot collectively own those oligopolies. A business does not have to be owned by just one person. Cooperatives are a thing.
Our current society is shaped by its regulation and the regulation is shaped by our current society. Regulated markets and our society are one and the same. To separate some kind of imagined free market out of that while still clinging to the same society doesn't make sense. They are fundamentally inseparable.
In the real world, the markets are regulated. We are talking about where there is a free market. Was your comment posted just to let us know that you don't give things much thought?
