A store itself should be an “experience”. You go in, play with products, be inspired and get an appetite for them.
Sure you may leave the store empty handed — just like 99% of people that walk into an Apple store. But if the store convinces you that you want... no _need_ their product, you can then buy later from their online store.
People and businesses really need to think of all sales and PR channels of a business as a whole, not a subset of each part. Only then will we see initiatives like this Pi store start to revive the high street.