Here in New York, FreshDirect has been the grocery delivery king[1] for a while but they had some missteps last year. I took the opportunity to try Amazon Prime Fresh.
I placed my first order and several hours past the end of my scheduled delivery time, my groceries still hadn't arrived. So I canceled the order, canceled Prime Fresh and that was that. Not a good way to win over business from the competition in what is a pretty competitive business in New York.
If my story is representative at all, it's unsurprising that their marketshare has declined, even after a very expensive acquisition.
1. https://www.bloomberg.com/news/articles/2018-12-11/inside-ne...