I can't speak for everyone who's ever used an Intel CPU, but Intel's certainly lost my tiny fraction of market share to AMD, at least for desktops (AMD laptops with solid specs seem to be rather unfortunately rare); switched from Intel + Nvidia to AMD + AMD when I built my latest rig, and haven't looked back.

Granted, in my case it was less about CPU security issues (some - though certainly not all - of which also impacted AMD and ARM CPUs, from what I understand) and more about AMD getting me way better bang for my buck (and also, because I wanted to try out a Threadripper and my God am I glad I did), but still.