Of course there will be, because demand will still exist.
There will just be less shops, with higher prices, and focused only on the types of things people tend to need immediately.
But that's exactly what people would want -- buy most of your stuff cheaply online with a delay, but have shops specializing in need-it-now categories of things for a premium price.
It's an entirely viable model.
Shops seem reluctant to do this, possibly because they don't like being price matched or view their inventory as a trade secret.