Maybe I'm wrong to consider this a zero-sum game, but surely if ISOC made a good deal selling .org that means that Ethos Capital got the short end of the stick. That means that eventually they'll realize that they can't make as much money out of it as they had hoped. And then what will they do? Agree to continue operating the TLD at a loss? ell oh ell. It's more likely that they'll either attempt to extort more money from people who can't actually afford to migrate or "strip" the TLD for parts somehow.
On the other hand if ISOC bet on the wrong horse they've lost the Goose that Laid Golden Eggs, and they'll be in a worse position to help the open web. From the point of view of people believing in the ethos (ha!) of what .org is supposed to stand for, it seems like a lose/lose situation.
I still don't really think it made sense to greenlight that deal for purely monetary reasons, I think the people on that board lost track of their objective, which I think is what the author acknowledges in part in his conclusion.