The statement is great, and meaningful. Hopefully it's a shot of ethics into a somewhat moribund patient. However there are competitive forces also at play. A company that doesn't boost it's stock price as much as its competitor is at a competitive disadvantage because now it has access to less capital.
If we're really lucky, someone has found a way to objectively value the goodwill generated by taking good care of their customers, employees, and partners. Or perhaps that already existed, and the metric has moved into favoring good behavior for some reason, so these CEOs are agreeing to move together into this new operating theater so they can take maximum advantage of their existing customer base and spend less on churning customers.
It seems like you're approaching this as if businesses are maximizing a function, and that doesn't seem to be how managers make decisions in most places? Competition is important but there are a wide variety of strategies and they are already weighing intangible tradeoffs without necessarily quantifying everything.
If we're really lucky, someone has found a way to objectively value the goodwill generated by taking good care of their customers, employees, and partners. Or perhaps that already existed, and the metric has moved into favoring good behavior for some reason, so these CEOs are agreeing to move together into this new operating theater so they can take maximum advantage of their existing customer base and spend less on churning customers.