The second biggest disadvantage is few players who have done their big OE have returned better. It's fingers-on-one hand stuff and not all fingers at that. The big change is younger players - the Charles Piutaus of this world - heading off.
It has long been feared in New Zealand that second-tier players would cause big problems if headhunted. Without a healthy second tier pushing up, the top tier is isolated, unchallenged and empty once injuries and retirements kick in. Without a competitive domestic competition, the All Blacks future seems a lot greyer.
Sean Fitzpatrick, in a column in this paper in 2008, called for overseas players to be selected, saying: "What changed my mind was an increasing worry it will be bad for New Zealand and world rugby if the All Blacks start to lose because of this lack of depth.
"I was never a fan of opening up the doors before but I think the sabbatical given to Dan Carter and Richie McCaw could open up a can of worms. If we do open things up then, yes, some players - maybe even many players - will leave and go to Europe. But I believe that, by doing so, they will erode the value of overseas players in Europe.
"The clubs don't want to be paying so much for players and opening the doors will see values drop, meaning the NZRU has more ability to keep other players in New Zealand. And it isn't as if our franchise or provincial rugby would suffer a great deal more than it is already. The standard has already dropped and we are now risking such a lack of depth in the All Blacks that we risk losing - and I think that is the last thing the game needs in New Zealand and globally."
That was seven years ago. I remember talking to Fitzpatrick about that column and he was sad things had to change - but adamant they did. He was similarly insistent New Zealand had to win the 2011 World Cup. "To lose would be to announce to the world that the All Black jersey really is losing its magic," he said. "That is not an option."
So let's go back to Lombardi and his "will to win" quote. If the base of New Zealand rugby is weakened and the All Blacks begin to lose more regularly, what happens then?
Fitzpatrick seems right. Opening the doors would likely drive prices down but no one is 100 per cent certain of that. It's a gamble, just as the Australians have gambled.
If younger players leave regularly, the worry is that winning - right throughout the fabric of New Zealand rugby - might be affected. Winning is a habit, a learned behaviour and winning helps build the will to win.
The All Blacks have played for years with the fear of losing. Their opponents often try to beat them by squeezing the life out of them - when some of the best victories have been won by playing the All Blacks at their own game.
There's no way of knowing what will happen but we probably have to embrace overseas selections while our destiny is still in our own hands - and so we don't stand by while Europe picks the plums off the tree of New Zealand rugby and poisons the roots.