And the ground fleet growth has been significant as well - at least they've moved on from the sketchy dented white vans covered in dirt with no branding to the amazon branded vans (still run by contractors).

"Morgan Stanley estimates Amazon is delivering roughly 46% of the items ordered through its U.S. site today — a total of 2.5 billion parcels in 2019. Amazon Logistics' share of its own orders doubled in 2019."

Whoever thinks Amazon is not showing up to play in the delivery space is on something.