Where I am in Maryland Amazon Fresh has had no delivery windows since before lockdown started. On top of that, I think they recently changed the site to block new customers. Safeway and Peapod have also had no slots. I've been using Instacart despite their hidden and obvious markups because I can get same-day with them while with others I can get nothing at all.

But once this is over I'll start going back to stores, or use a direct seller like Amazon. Inserting a third party into this process seems pointless and inefficient to me - though as current circumstances shows, it does have its advantages.