It's good there are different options, but this would be very unpalatable for me. The "anonymity" of these big spaces leads to very anti social behaviour in my experience. Luckily in 10 years in London I never shared with more than 1 other person and now own my flat.
In the US can you not order food for delivery directly from supermarket, same for restaurants?
I would have thought in the UK Tesco, Sainsburys etc do as well as any delivery only services (Ocado, Amazon Fresh etc).
I would have guessed direct restaurant orders are as large as justeat/uber eats style services. They would certainly deserve a place on the pie chart...
I also dont believe the average US consumer spends $105/month on meal kits...