Tracking deforestation, melting of glaciers, basically anything geographic. If you're looking for things people profit from, you're right that some trading firm

Tracking deforestation, melting of glaciers, basically anything geographic. If you're looking for things people profit from, you're right that some trading firms use satellite images to count cars in parking lots of e.g. Walmart to predict earnings reports. Similar things can be done on oil refineries for example (some satellites can even look /through/ oil tanks to look at oil levels by looking at specific wavelengths).