The problem with a one size fits all threshold is that it does not consider the regional costs of living. Imagine earning $109,000 in Philippines verse earning

The problem with a one size fits all threshold is that it does not consider the regional costs of living. Imagine earning $109,000 in Philippines verse earning the same amount in New York City? Is the person in New York City really rich if they are paying 40% of their income for a 1 bedroom apartment?