At least one big supermarket already has. Costco has a great selection of prepared, near-prepared (stick in oven), and frozen foods that are tastier and cheaper than Blue Apron. If meal kits become a huge market, I expect Costco will enter.
Prepared, near-prepared, and frozen meals are a different product than Blue Apron. Blue Apron is raw ingredients that you have to prepare yourself.
We have this already in the Netherlands. Albert Heijn is the biggest supermarket here, they have raw ingredients grouped in boxes for different recipes like soups, lasagnas, etc. I know I pay more than if I bought the ingredients one by one, but hey, sometimes you do it. They also do home deliveries, have express checkouts, and now they will experiment with something like Amazon Go.