How on earth could a small organization do any of these things?
I can understand why you feel like you're living a Strange Day in an alternate universe, because the reality of human social organization is completely opposed to your thesis. If small groups are superior to large organizations in every case and in every way, why in the hell have people been forming large organizations for so long? Are we all just stupid, incapable of seeing the basic truth that you see? Were the Romans, Mongols, British, Mayans and all the others just a bunch of idiots? People have been forming ever larger organizations for the same reason that NASA is a large organization: because it's the best way to to do big things. That's why Google moved out of the garage and hired several thousand people. If small organizations were always better, startups wouldn't require investment at all.
It seems like your reasoning is based on the Homer Simpson quote, "Because they're stupid, that's why. That's why everybody does everything." But I can assure you, we aren't all stupid. Organizations get big because big wins.