I think they would probably just be selective about who they let reproduce...ie no health problems, intelligent etc.
I may be assuming too much, but I don't think Bill Gates would be able to collect socioeconomic information on them. If he could then it's a done deal. However, government has a big issue of pairing up with guys that want that kind of information.
The health information isn't even a given considering that he would only be promoting and making the product.
That's why I think there would have to be some kind of "ACCIDENT" where thousands or millions of women become infertile from using the product.
If you give a woman too many birth control hormones she becomes infertile like that. Otherwise, there is no way to make sure that they don't have children.
All their company would have to do is pay out some medical malpractice claims because if they make it look like an "ACCIDENT" it isn't a crime.
Think about Asbestos. They knew that shit was bad, but they made billions before they had to pay settlements.
Who better to have reproduce than poor people who can't afford birth control. They're easier to control.