We'll have to see how many of the players who bought up all the PF2e Core Rulebooks during the OGL fiasco actually stick around and bring more players with them. It will be interesting to see how PF2e sales do when the print run Paizo ordered is available for sale in April.It's a shame Paizo isn't in a position to capitalise on the 5e/DnDone switchover. With pathfinder 2e being both its own thing, and extremely new, they're not going to be snapping up many of the players in the switchover. But they're not going to drop 2e for a new system either.
I highly doubt PF2e overtakes D&D but it also doesn't need to. Competition makes everyone better, WotC included.