Very true but I chalk pf1e up to the edition wars. The market split really started with the birth of the OSR and D20 fatigue. 4e was just a sort of thumb shaking at the 3.5 fanbase, unintentional, that didn’t help so Pathfinder became a bigger emblem of that split because it picked up those who didn’t move to 4e. I think their market is now Paizo fans and not edition warriors or 3.5 players looking to continue to use their books considering how far PF1e moved away from 3.5 as the supplement churn started and how close to 1e that 2e actually really is when you look at the entirety of the Lifecycle and Pathfinder Unchained’s various optional rules that were implemented.
While I don't disagree, that's just the reason PF1e was an outlier. It was very much an artifact of a series of events that is not duplicable.