Switching is different in this business though. In the group deal business, as a customer you're buying individual deals all the time. As soon as not-Groupon has a better deal than Groupon, you switch.
In meal-kit business, you're a subscriber of one service. Switching to a new one means entering all your info again, choosing from the list of options, and waiting for the kits to start shipping to you.
Maybe. Signing up for a new account is maybe five minutes work. I might equally be inclined to argue that the switching effort is more than justified by the variety gained by trying a different service.
It's true that churn will be slightly lower in comparison to Groupon et al (due to the subscription aspect)... but the barrier-to-entry is very low and it's likely the subscription part will dissolve to being effortless as competition heats up.
In meal-kit business, you're a subscriber of one service. Switching to a new one means entering all your info again, choosing from the list of options, and waiting for the kits to start shipping to you.