The real problem here
...IMHO is the market expectation that mature compaies will continue to grow at the same rate as saplings.
The only way to create this 'growth' is by buying up other companies in the same general market as you and continually restructure your debt to keep the process ongoing. Not a receipe for technical innovation when all the 'excess' staff are being trimmed from the industry.
Too many CEOs today have no vision for their company other than who they might buy to satiate the shareholder's growth expectations. I can't see this ending well for the last big fish in the pond - where does the Ponzi growth come from then?