The definition of domination changed a lot in just two years.
No console being able to hold the top 20 or 30s is quite woriesome, specially after a new model and price cut.
IIRC PS4 had been down YoY since June. The saturayion point was reached early, and the wait for the Pro and Scorpio are affecting sales.
I don't know if the Pro will provide that much ssteam for this Holliday season.