Through which mechanisms can a skewing of income distribution at the expense of employees curb growth?

Over the past 20 years, income distribution has on average become skewed at the expense of employees in OECD countries. This supply side policy has been aimed at stimulat ing growth by facilitating investment and job creation. But there has, on the contrary, been a slowdown in productivity gains and long-term growth. How can this be explained? A demand side mechanism: the fall in the wage share of national income reduces expectations for future domestic demand, and therefore reduces investment; A supply side mechanism: the increase in the profit share in GDP is partly explained by corporate concentration and the emergence of companies with dominant positions; these companies are not encouraged to modernise , they sterilise innovation and buy their potential competitors.