If you look across the economy, if you have multiple players in an industry, you have more customization, more innovation, greater choice for consumers. The more you have consolidation, the less likely you are to invest in innovation. It becomes all about driving down cost and mass production. And that's not good for innovation in an industry.
The fruits of the economy and all the advantages of technology and globalization have gone far more to the investor class and the professional class and not as much to the working class. Partly because of the loss of labor unions, partly because of things like a lack of antitrust enforcement, policies that have privileged shareholder returns.