It was sustainable pre-pandemic because a lot of infrastructure and services revolved around workers traveling into the office. If I stayed past 8pm at work, my job paid for my dinner and paid for a cab ride home. Obviously that wasn't them being generous. It was encouraging late hours onsite in the office.

Now I still may have to work way past 8pm - but I do so in my pajamas and raid my own fridge and I don't have to commute once I'm done - I shuffle over to my bed and fall asleep. The result of that though is a lot of places that might stay open late and employ delivery people in Manhattan, no longer do so if they're even still in business.