"Since the 90s, parental incentives have soared across rich countries, yet birthrates have continued to plummet" The premise is wrong. It's extremely expensiv

"Since the 90s, parental incentives have soared across rich countries, yet birthrates have continued to plummet" The premise is wrong. It's extremely expensive to have a family in rich countries. In most families both parents have to work to raise them. Making it very hard to raise kids. Bottom line as countries get richer and the population flocks to the cities so the costs associated with having a family soar. A lower cost to have kids is the fix but the question is how can that be done? Current incentives are not enough.