...the typical response from legions of photographers was something like: "I'll stop using DSLRs when you pry my cold, dead hands off my Nikon (or Canon, or Pentax or.....). A few years ago I was told it would take a decade or more before mirrorless cameras outsold DSLRs.
I was also told by a huge number of working photographers that: "Real Pros will never stop using optical finders!!!"
Imagine how surprised I was when I walked into my local camera store. They finally organized all of their used cameras. These are cases filled with almost nothing but DLSR cameras. All used. All looking for new homes. All hoping to escape recycling or salvage.
Seems like a whole lot of dyed-in-the-wool DSLR adherents died all at once. Or maybe they just had their minds changed by progress. I guess that could happen. I just don't see it very often...
From February 2010: https://visualsciencelab.blogspot.com/2010/02/how-would-i-design-perfect-camera-for.html
(Yeah. That was twelve+ years ago...)
When I asked the staff about the hundreds and hundreds and hundreds of Nikon and Canon and third place finisher DSLR cameras bodies and lenses they had on their shelves they told me that very few people even consider buying a DSLR these days and the store had been buying the used ones up for peanuts, or on trade, with the idea that a barely used, professional DSLR would sell well to people who still liked the moving mirror/optical finder technology.
The follow up? They've actually stopped buying used DSLRs because --- no one seems to want them anymore. They don't actually sell these days. But Sony A7s, Panasonic GH cameras and Olympus OM-1s, even Leicas, are flying off the shelves.
I got bored photographing the DSLR surplus with my phone and asked to see the case with the used L mount system stuff, or the used Leica SL/CL stuff. It didn't exist. Seems people don't trade them in very often. Like, almost never. Maybe it's because of all that stuff I wrote about in 2010. The tectonic shift finally arrived in spades and now it's on track to be the decade of mirrorless cameras. In whatever form/brand you like. Suprisingly people finally figured out the advantages of mirrorless cameras and EVF finders. Better late than never.