Comment Re:No Profit...Ever! (Score 2) 216
Not correct. A commercial pilot certificate lets you fly for non-scheduled operations - think charter flights, on-demand sightseeing flights, powerline and pipeline inspections. "Uber for the sky" would be exactly this - non-scheduled on-demand operations ("Part 135"). An Airline Transport Certificate is required for scheduled operations - which includes not just Delta, American etc but also FedEx and UPS who fly under Part 121.
It's not based on whether it's passengers or cargo.