America has a capitalism problem. What the article fails to address is that the root cause is really capitalism. Under capitalism wealth and power always concentrates, which in the case of businesses, that eventually means bad monopolies. Under a representative democracy that also means politics will always be corrupted because those with money and power will always be benefited by controlling politics, and they have the money and power to do so (who owns the news media? who can afford to buy off politicians, whether they start corrupt or not?). While the power of monopolies ebbs and flows as those without capital get angrier, the monopolies will always come back because that's what capitalism does.

Monopolies are not inherently bad. It's entirely possible to have a monopoly and have a great thing that everyone likes and is happy with and which keeps innovating. But under capitalism the primary incentive is the accumulation of capital which rarely lines up with creating something great long term.