Is income inequality "good" or "bad inequality"?

Income inequality can be called "good inequality" if it results from innovation and investment in new technologies (1) . It may be called “bad inequality” if it results from corporate concentration (2) , labour market deregulation and deunionisation. We try to measure what proportion of the difference between income inequality in OECD countries is explained by innovation and investment in new technologies, i.e. what part of the inequality can be considered "good inequality". We see that inequality is "bad inequality" since a higher innovation effort in an OECD country leads to lower rather than higher inequality: "good inequality" does not seem to exist in the long run .