New Zealand is a country of 4 million and right now they are competitive in cricket only because they are able to attract talent from other countries. It's not just South Africans like Devon Conway and Glenn Phillips. Mark Chapman was born in Hong Kong (he's part Chinese) and players like Ish Sodhi and Ajaz Khan are from the sub-continent. And unlike the case with India, when some of their key players like Kyle Jamieson or Lockie Ferguson get injured, they face issues in finding the suitable replacement (as a result of the limited player pool).