Seriously though, I was thinking on how I had to stop and get cat litter, milk, and cereal on my way home today when I read what you posted. While I get some consumables online; pet food, filters for my odd-sized vent, and until recently Hello Fresh; I mostly buy consumables in person.
This surprised me too. My apartment hallway has 5-10 amazon packages in it per day. I guess... everyone's just spending crazy money at home. Seeing the other comment about large purchases being made in person makes sense, but still - you can buy cars and clothes online now. 17 seems REALLY low!
https://www.census.gov/retail/marts/www/marts_current.pdf