`The biggest loss of all, though, is a necessary one: the myth that anything but a for-profit corporation is the right way to organize a company.`
I don't see how anything that happened this weekend leads to this conclusion. Yes, it seems likely that the board's actions will result in an OpenAI with much smaller revenue and consumer traction. But the whole reason for setting up OpenAI as a non-profit was precisely ensuring that those were not the overriding goals of the company.
The only conclusion that seems warranted is that "the myth that anything but a for-profit corporation is the right way to organize a for-profit company.", but that is pretty obvious.