Yeah but stockholders aren't necessarily retired.

Sure - the state of life an owner is in shouldn't be relevant, in terms of the company's obligation to them.

True but

- everybody should have the opportunity to retire

- that means they have to save & invest

- that means corporations have a moral duty to do their best

- if an old person entrusted my company with the financial results of their life's work, I'd feel a lot of pressure to make good on the implied promise that I won't just take the money and put my feet up

I don't see why retirement is relevant here. Company's duty is to its shareholders either way.

Agreed but in the case of retired people, that duty hits different. They don't have the ability to go back and earn more money; many are also in cognitive decline.

The duty to every share is the same, it's not really a consideration. It's not like Google has a separate "Greyglers" class of shares.