Even Ben-Gurion and Yitzhak Ben Zvi were politicians and romantics, not scientists. Whatever Ben-Gurions and Yitzhak Ben Zvi ruminated about Arab labour is irrelavent. The Zionist movement wanted to create a Jewish working class and revitalize the Jewish people, many were socialist and communists who also didn't want to exploit non Jewish Labor. That is the reason Arab labour was avoided, not because the Arabs resisted "the colonial enterprise"
Syrian group says Nusra abducts its leader, in blow to U.S. plan (Reuters)
from the article: Palestinian archeology gets int'l boost ahead of 2011 statehood plan