Let’s say they do alter the price based upon demand (which it sounds like they won’t do at a granular scale like the other commentators are suggesting). It will punish customers who come later, but reward early customers who buy in bulk. Imagine scalping ice cream in a parking lot on a hot day!
But seriously, i would like to see non linear scaling of prices for people who buy a lot at once, for scarce items. Everybody gets a little seems like a more moral way to handle scarcity, but Walmarts new pricing system won’t handle this. Oh well. Overall though still a fun development.