Forget DoorDash and Uber. Walmart and Kroger Are Now the Innovators in Food Delivery.

Shoppers returning to stores in the wake of the Covid-19 pandemic, venture-capital money drying up, and higher labor costs mean the first golden age of food delivery looks to be over.

But customers have become accustomed to the convenience of their groceries arriving on their doorstep. The sector is looking for the holy grail of a profitable e-commerce model, which could supply fresh investment opportunities.