What you mean is there is a small chance for a bot script to buy them that checks the sites for the 24/7 . There is no chance of a human clicking on the pages with a mouse of buying them
Smaller shops get some stock too. Smaller shops often don't have an online store or the one they have is broken or doesn't represent current their stock. Scalpers don't bother with those stores.
I literally entered "computer store toronto" into Google and started calling every small one in the results. I found what I needed in fewer than 15 calls and picked it up an hour later.