Government interventions that enable monopolies are almost all taken at the behest of would-be and actual monopolies, and powerful lobbyists ensure the status quo remains\
in place. This applies to the medical, legal, and other professions as well. Banks, auto dealerships etc.
We have a global economy, and what has brought? The loss of our manufacturing
industry, lower wages, lost jobs, high unemployment, bootleg products and even dangerous food products from China. The list goes on and on.
Perhaps Friedman would have evolved in his thinking were he to have lived longer, but he was too invested in his theories to have changed, imo.