The HL3 memes don't even seem fair to use anymore. I don't even want to un-seriously make joke fun of them at this point. They are just genuinely doing so much for the community.
But overall Valve just seems straightforwardly less shitty towards the consumer than other major companies in their space, by a long shot.
The issue really lies in the fact that the (long-term, majority) shareholders aren't much, if at all, related to the customers or employees of the business, but first the founders, and then parties who are merely interested in rising stock prices and dividends. It feels like the solution here ought to somehow desegregate voting rights from how many shares are owned, instead of dismantling the concept of public ownership entirely. (Or, perhaps, allow the general public to proxy vote via their 401(k) index funds?)
(There's also strange situations like Google/Alphabet, which is publicly owned, but effectively does not allow shareholders to vote on anything.)
Why would anyone believe that this means an organization is well run, or to everyone's benefit? Here in Germany we're notoriously unfriendly to public companies, most of the (well functioning) Mittelstand is private and family owned. And I pray to god it stays that way because I'd rather trust a company whose leaders have their family name and reputation staked on it for the next three generations than I do the amorphous blob called "the public". As Kierkegaard said, in the crowd nobody is responsible.
If you want to see what happens under public ownership visit a public bathroom. I don't want anything externally steered by nobody in particular, I want something steered by a handful of people with names and addresses.