It is perhaps unfortunate that things change over millennia, but they do. The "ancestral" home argument has always been Israel's weakest legal leg to stand on. Many places have changed hands over time (especially thousands of years). The smartest people simply adapt to this as best they can.
Woman moderately wounded by firebomb thrown at her car in north J'lem (Haaretz)
from the article: IDF Civil Administration pushing for land takeover in West Bank