It has been interesting watching the concept of Black Friday (and cyber monday) evolve over the past 20 or so years from being mostly an "American big box retailer dumping excess stock" thing to "oh boy its black Friday, time to go buy stuff!" thing. The entire event has basically been undeservingly co-opted by everyone looking to cash in on hype over an event that basically doesn't even resemble what made it a thing…
I'm Canadian in 1999 I was in Scranton, Pa. for Thanksgiving and my friend said Black Friday tomorrow. I said what's that? She was shocked I didn't know about it. Back home it was unheard of since our Thanksgiving is in October. I didn't go to a store I headed home but now I wish I would have experienced it.
(It's not our first American cultural import either. Halloween has been a thing in the UK for as long as I've been alive, but my parents' generation didn't grow up with it.)