Economists believe that technology will replace 50% of current jobs by the 2030s. PwC has found that drones could replace up to $127 billion of employee labor across industries like infrastructure and agriculture. Drones will be used across all sectors to do a variety of jobs: spraying pesticides over farmlands, assisting security companies monitor their websites and customers, and helping with the filming of movies and shows. Additionally, drones will provide provide cost reductions and will be particularly helpful towards major online shopping sources by providing a faster, cheaper alternative to standard shipping.
See "Drones could replace $127 billion worth of human labor", Chris Weller, Tech Insider, May 12, 2016