[petra]

The goal(at some point) is to order something on a whim, at work, and have it waiting for you as you get home.

Or order something at night, and have it waiting for you when you wake up.

Is this luxury ? sure.

But they also give you a certain feeling of power.people crave power.

And less uncertainty, on those 2 days of waiting. And people dislike uncertainty.

And with delivery robots on the way - the price difference between 1-day and 2-day might be pretty small.