The baby box is a blessing for many families, and it's also much more than the box (which btw. is not a cheap piece of cardboard but comes complete with an insulated mattress and bedding made of high quality materials): there are clothes, diapers, hygienic goods, etc.

And last but not least, it's also a strong symbolic gesture: Society saying: "Don't worry, we got your back. You're not alone, we are all in this together, and we help each other."