I'm not seeing the connection between a relative lack of regulation in the software industry and the price of FOSS software being (close to) zero or your larger assertion regarding free markets and prosperity in general.
At the same time I'm not sure that the computer industry is a good example for your claim due to its roots in the Bell telecommunication monopoly and the massive subsidies from the US military that lead to the wide availability of the cheap personal computers that most of the open source software that you are talking about originated from.
If anything the rise of American tech giants and the proliferation of cheap computers is directly attributable to decades of intervention by the US government and not a free market success story.
At the same time I'm not sure that the computer industry is a good example for your claim due to its roots in the Bell telecommunication monopoly and the massive subsidies from the US military that lead to the wide availability of the cheap personal computers that most of the open source software that you are talking about originated from.
If anything the rise of American tech giants and the proliferation of cheap computers is directly attributable to decades of intervention by the US government and not a free market success story.