@Aster Poverty in the context of monastic life should not be confused with poverty as the life of the poor. Many religious orders require vows of “poverty, chastity and obedience”. The definition of poverty, for the sake of those vows, is a renunciation of ownership, not necessarily to live in impoverished circumstances. When I was in seminary, one of the priests on the staff came from a wealthy family, and his family would buy him a car every year or two. That car would be technically donated to the order, and owned by the order, for the use of that individual.
Even such things as personal prayer books, instead of having “This book belongs to Father (So-and-so), they would inscribe ”Ad usum (for the use of) Father (So-and-so).