If financial incentives aren't enough to help the "declining" birthrate, what will?

The Wallstreet Journal recently published an article about how women in the UK are still choosing not to have children despite the many social programs that would help women to start a family comfortably (Paid maternity leave, free healthcare, free public transportation, basically anything a person could need to successfully raise a child while keeping their job). It essentially boiled down to a social choice. The women who didn't want children would not be convinced to have them based on these financial incentives. The women who did want children would continue to have children despite any financial lack. The women who were on the fence decided to build a life for themselves with a good-paying job, a comfortable home, a space ideal for starting a family and choosing not to as they like their stable financial lifestyle.

It's a very interesting comparison to the US, where instead of providing financial incentives they're simply stripping away women's ability to choose not to have a child at all.

It also highlights just how much the idea of a declining birth rate centers around white-focused countries as the countries with the highest birth rates that go well above the replacement rate are countries like Niger, Angola, Mali, Chad, and The Central African Republic. So what do you think is the primary difference that is causing this uproar, and if this is truly an issue then how can it be solved?

If financial incentives aren't enough to help the "declining" birthrate, what will?
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