US companies: Oligopolies and oligopsonies

It is now well known that in the United States there is a high degree of corporate concentration in the goods and services markets, and that this concentration partially explains the rise in profit margins and the weak investment and productivity gains. There are therefore oligopolies in the goods and services markets in the United States. But recent economic research literature has also showed that US companies have formed dominant positions in the labour market, allowing them to weaken wages, especially in the sectors where wages are low. There are therefore oligopsonies in the labour market in the United States. It is therefore important to keep in mind that companies enjoy dominant positions in both the labour market and in the goods and services markets in the United States .