It also means that more people have to be willing to sell (or that if only a few sell, investors hold less power)

Of course everything a company does is in the best interest of the company. Even as simple as “let’s make excellent products with lifetime warrantees” benefits them by making people want to shop there.

But that doesn’t mean it isn’t a good thing when companies realise the customers best interest are also their best interest. We should encourage that, not scoff at it.