Chile during the Pinochet Regime is an excellent example of the Neoliberal system not delivering on the promises, as hn_throwaway_99 mentioned, economies of scale simply take over any benefit of low gov friction "free markets", and any small advantage over time becomes an overwhelming one. At which point it simply becomes a mathematical snowball effect, reducing or removing government barriers of entry won't make your particular gadget or doodad be able to compete in quality nor cost against one produced by a huge mega-conglomerate, if anything that mega-conglomerate will see if it can steal your idea or buy the patent (gov!) so it can improve its own. It is the same thing that happens in South Korea with the Chaebols
Anyhow, point being, the Kansas Experiment failed[1], Chilean Chicago Boys Experiment failed to deliver after ~17 years of authoritarian rule(When Pinochet left power country had a ~40% poverty rate)[2]
This leads to the simple idea that the less friction your system has to accrue wealth the higher wealth inequality will be, and then the goal should be to make it as easy as possible for everybody to make their own start ups, but to create as much friction as possible for said startups to gain too much economy of scale momentum. Where the threshold of where that line would be, be left to policy makers, and ideally something politically independent, akin to the central bank
[1] https://www.npr.org/2017/10/25/560040131/as-trump-proposes-t...
Pg17 United Nations Document https://www.undp.org/content/dam/chile/docs/pobreza/undp_cl_...