Despite controlling about 40% of US online retail, Amazon only has about an 8% share of total US retail. There’s still plenty of room to grow here.
https://www.emarketer.com/content/amazon-will-surpass-40-of-...
If there is something I might prefer to not wait on Amazon for, I will not find it at Walmart even if I remember Walmart once carrying that product. This is without fail. Each new (rare) trip to Walmart reinforces the lesson.
I have never been fond of Walmart's grocery department. I suspect (long ago) that they were able to sell produce 1 cent cheaper than anyone else by buying the least-wanted, unsold inventory from agricultural distributors, and the quality always reflected that theory. I could buy strawberries from Walmart, buy them again from the local grocery chain 10 minutes later, put them in the fridge simultaneously. And the Walmart-bought produce was slimy the next day, the grocery store produce not (unless I stacked the Walmart clamshell on the grocery store one... cross-contamination).
Worse still, they have reduced their personnel to skeleton crews, all shifts. The stores tend to look like they were looted after hurricanes. I do not know how anyone shops at Walmart, and it scares me that if my circumstances were less agreeable I might be forced to shop there too. Walmart might aim for stealing marketshare from Dollar General as a growth strategy, the overlap must be nearly absolute.