Meal kits are doomed but fully prepared meal delivery services like freshly are here to stay. Even if freshly itself dies I really think Amazon is going to expand into the pre-made meal market.
I'm thinking about non-cooked frozen meals , which you'll cook at home in some one-click cooking gadget , like an instant-pot or a smart combi-oven, or maybe some basic cooking robot[1].
That way you could get high quality, high-convenience at a cheaper price.
[1]you get pre-cut ingredients.
You put each ingredient in a bin at your home cooking machine.
The machine adds each ingredient to a pot at the right time, and mixes when needed and controls the heat.
If it was, a competitor would be offering it for a mass market price($300-400 or cheaper), and have a hit.