Doesn't even make sense. Babies cry all the time for a multitude of reasons, none of which are informed by how many diapers are in the house.
Babies who cry a little at a time will be awash with diapers, leading to secondary market opportunities. Now we just need a two-sided marketplace to capture that business and charge a modest fee.
That'd be a neat integration: "Alexa, why is my baby crying?"