Just 2 years ago I had a lot of clients who were on their 3rd or 4th home sale and purchase at a pace of one move every two years! Where have all the serial home sellers gone? These "movers and shakers" have become "watchers and waiters".
Many of these folks were making more tax free money on moving than they did in their regular jobs as the market climbed and climbed. We knew things would have to chill eventually, my goodness, who could afford to keep buying as the prices went up and up.
Luckily in our area, Billings Montana, we didn't see the steep climb, therefore we haven't seen the drop off, we're just steady as she goes.
So maybe the serial home seller is just relaxing on the patio in the backyard and is not really dead.