Initially, the two shopping holidays were much more distinct because you had a dial up connection. And it sucked. By moving the online retail occasion to Monday, digital vendors allowed consumers to access their shops via fancy high-tech internet connections at their places of work, rather than using Roadrunner back at home. This was likely not a particularly productive day in most offices. Now, it's fair to say the holiday is far more unproductive in high schools, where students online shop for rare Juul pods on their phones under their desks.
How Do Black Friday and Cyber Monday Deals Differentiate?
In spite of the fact that Black Friday has embraced the whole digital thing, there remain a number of deals, best known as "doorbusters," only available to folks who actually set foot in stores. Retailers will advertise these deals online, but for the serious 4K TV-blender-Amazon Alexa-winter pajamas deals, you'll actually have to show up at brick-and-mortar locations. Even come Cyber Monday, you won't find deals this good.
That said, it goes both ways. There are a number of online deals available on Cyber Monday that you won't find anywhere on Black Friday. There are, of course, plenty of contemporary shops without physical storefronts at all, but beyond that, you're likely to find some seriously good shipping deals, while Black Friday shoppers going the online route are unlikely to save as much cash in the delivery department.