If it's a great value then why isn't that effort being directed entirely towards google products? I get the argument you're making I think, that it's free valuable labor. But if that's true then what explanation is there for primarily publishing about competing products? Even if the argument was purely user safety then surely there would be no reason to publish unpatched problems publicly which has happened in the past and seems like the sort of thing that group like P0 could have chosen to handle in a more graceful fashion. Somewhere in the chain of command is a reason for why P0 focuses where it does and it doesn't seem likely that the reason is "Because we're rolling in gold and Apple and Microsoft could use the money."
There's no amount of axiomatic reasoning you're going to be able to generate to make your argument work. Vulnerability research is expensive. Google is giving it away to its competitors. Those competitors and, much more importantly and to a greater extent, their customers, benefit directly. Those aren't so much statements of opinion so much as they are simple facts.
