I suspect that you are right. Unless, of course, one counts smart phones as computers.
Amazon's domination of eCommerce is a problem. However, one also has to look at the declining price and margins for computers. Add to that the fact the people don't have to upgrade as often. The last time I bought a computer was four years ago, and I don't see a reason to buy another computer in the foreseeable future.
To be honest, most people probably don't need more than a first gen core i5 with 8 GB of RAM and an SSD which would be in the neighborhood of 10 years old or so. Computers have always been a hobby for me so I enjoy building new ones and upgrading old ones. I'm sure I buy much more than what the average person needs.
I've developed the habit of renting server space when I need computing capacity. So, my home computer is little more than a client that connects to servers.