Brick and mortar had two significant advantages over online. You could easily hold the product in your hands to make your decision, and you could just grab it and head directly to checkout to have it today.
The same places that lock everything up are the ones that never have adequate staff. You're lucky if you don't find the checkout uninhabited, much less getting someone with the right key to show up any time soon to unlock the case.
If you're not going to get a good look at it anyway and can't just grab and go, might as well get it cheaper online and you don't have to go beyond your front door. When you shop online, nobody cares if you're in your underwear.
Went to Home Depot to buy a power tool. The poser tools were locked up so looked for someone to open the case but there was no one around so went home and bought it at Amazon.
Biology is the only science in which multiplication means the same thing as division.