What's the usefulness of analyzing just a random sample? They need to analyze 1 billion images so they have granular data on what % of homes in specific zip cod

What's the usefulness of analyzing just a random sample? They need to analyze 1 billion images so they have granular data on what % of homes in specific zip codes, towns, etc have solar panels installed. This is actionable data. IE. if there's lower % usage in a specific zip code, they might implement some action to improve it in that specific zip code. So of course, the value is all in the granularity. They already trained the model on random images.