As another poster already said, the complaints are not about capitalism, even if sometimes they are worded in such a way, but they are about monopolistic capitalism.

For "capitalism" without other qualifications, there are no alternatives. The so-called socialist or communist economies have always lied by pretending that they are not capitalist. In fact all such economies were the extreme form of monopolistic capitalism.

Towards the end of the nineties of the previous century, a huge wave of acquisitions and mergers has started and it has never stopped since then.

Because of this, to my dismay, because I have grown in a country occupied by communists so I know first hand how such an economy works, the economies of USA and of all the other western countries have begun to resemble more and more every year with the socialist/communist economies that were criticized and ridiculed here in the past.

While the lack of competition and its consequences are very similar, in some respect the current US and western economies are even worse than the former socialist/communist economies. At least those had long-term plans. While those plans were frequently not as successful as claimed, they at least realized from time to time useful big infrastructure projects.

The main role of the laws and of the state must be the protection of the weak from the powerful, for various definitions of weakness and power, to prevent the alternative of attempting to solve such inequalities by violent means, when everybody loses.

Therefore there must be a balance between the economic freedom of the private companies and the regulation of their activities.

It is obvious that in USA such a balance has stopped existing long ago and the power of the big companies is unchecked, to the detriment of individuals and small/medium companies.

The US legislators spend most of their time fighting for the introduction of more and more ridiculous laws, which are harmful for the majority of the citizens, while nobody makes the slightest attempt to conceive laws that would really protect the consumers against the abusive practices that have now spread to all big companies.