Because of our Sinterklaas gift giving event on 5 December people would have been out shopping for presents in any case (like Xmas presents, just earlier and with the OG Santa instead of the Coca Cola dude), so in terms of footfall it doesn't change much, but it was just too good of an opportunity to pass up I guess.
Refreshingly, one national household items chain (Dille & Kamille) closed its store in my town today, with a notice stating the staff was out picking up litter around the city centre instead of submitting to the consumerist Black Friday phenomenon. Interesting, but on-profile for their brand. Good deeds are a marketing opportunity too of course.