Yeah but in poor/developing countries raising birth rates are not something they're looking for but the opposite, (the most important thing is reducing teenage pregnancy). I lived in Colombia and they had programs where they have free antibcoceptives, free antibcoceptives implants that last a few years, like a lot of effort is spent in preventing birth rates, since a lot of people without the resources have a lot of kids. I don't think the problem of birth rates is related to financial reasons when in poor countries you see people with multiple kids without being able to afford It. I know personally people that have 10kids.