Why don't you look to Europe instead?
And even the modern monopolies... Gates and his mom getting him a deal with IBM is a bit different than someone else without a well connected mom.
And looking at tax rates companies like facebook pay, I think corruption is very well alive in USA too.
“As a policy regime, it is described by academics as advocating economic and social interventions to promote social justice within the framework of a liberal-democratic polity and a capitalist-oriented mixed economy.”
Some of the world’s most successful countries are run that way.
It is called social democracy.