Both Walmart and Target have taken huge strides in moving their business online, and in a lot of features/perks are comparable to Amazon now (especially in price and shipping speeds; Walmart price-matches Amazon and gives free two-day shipping on every order over $35 without a Prime-esque requirement, for example).
One can also place orders at Walmart and Target, and pickup the next day; just pull into parking spot, order is brought to the car. Best Buy is also offering "to the car" order delivery during the pandemic.
Amazon delivery times are currently 1 week+ in many locations.
They are examples of traditional retail businesses that have adjusted well to the new world of online shopping.
They are also benefitting from another trend, which is that big-box stores in general are outlasting smaller stores. Another example would be Home Depot and Lowes thriving while smaller hardware stores fail. Shopping at a big box store is often more convenient than making multiple trips to smaller or more specialized retailers.
My family has ordered online from all three of these retailers during this pandemic. Walmart and Target may have roots in traditional retail, but their online pipeline is quite robust these days.