The real value for me besides time saved (and the insane coupons/free meals) is using ingredients that I wouldn't have otherwise picked up. I'll just grab button mushrooms most of the time but getting some different variety is nice.
I also usually grab the store brand meat because its cheaper. It's not like the grass fed organic whatever isn't there, I just usually won't pick it up.
I use HelloFresh, HomeChef, and Plated.
I think the real question is whether there is enough volume at a given grocery store on meal kits that they can afford to hire a person who just spends their day assembling and stocking meal kits by the deli section, or if this load will get shifted to existing employees.
It will have the proper size, though.