"I'm not against players like Piutau going away at 23 years old - I think it's a good thing.
"I think they should go and experience another lifestyle. Obviously the money, in terms of what they can earn in Europe, is just phenomenal now.
"Someone like Piutau, for example, you've got to say 'Well, of course he's going to go'.
"For us living in Europe, it's great to see these young guys coming here.
"The quality of rugby in the UK, France, Ireland, is getting better and better because we've got a lot more foreigners coming in."
Fitzpatrick said the Kiwis were "leaders" in trying to keep their best players at home, and allowing sabbaticals was a key part of that.
While they haven't got the money to compete with overseas outfits, the "legacy of our jersey" was the most important factor.
"We need to keep winning," he said.
"And as long as we keep winning, these guys will want to come back to New Zealand and play for the All Blacks."
-AAP