Not only drones for sure.
Air cargo business
Getting around 20 Boeing 767. Read more: http://www.wsj.com/articles/amazon-seeks-cargo-planes-for-air-freight-operation-1450474520
Amazon disclosed the acquisition of Israeli chip designer Annapurna Labs for ~$350M. http://www.wsj.com/articles/amazon-enters-semiconductor-business-with-its-own-branded-chips-1452124921
mazon China is now legally allowed to manage ocean shipping to the United States for other companies. http://www.theverge.com/2016/1/15/10774124/amazon-ocean-shipping-china-license?utm_content=bu
Lobbying $ increased 91.4% from 2014 to 2015
Amazon is trying to lobby for issues like “unmanned aerial vehicles, the FAA Modernization and Reform Act,” and to surface transportation in order to have more control of its fulfillment process.