sunshadow21
Explorer
I fully grasp that Pathfinder sold less than 4e and even Essentials, initially, and pulled ahead only when the release schedule in the wake of Essentials slowed to a trickle. I get that Pathfinder has enjoyed a solid #1 status for the couple of years that D&D has /not been published at all/. I get that there's a core of Piazo fans who are only Paizo fans because they conceived an abiding hatred for WotC, and they may /)come back. But they didn't topple D&D from the #1 spot. WotC did that by not offering enough (or, for two years /any/) product).
I don't think you give nearly enough credit to Paizo. WotC certainly helped them out a lot by faltering, but Paizo still had to make sure to take certain steps to take full advantage of the opening. Paizo today is quite strong and would probably have a very different experience vs the numbers that 4E and Essentials put up. They couldn't full out beat WotC, but they can certainly realistically compete for the #1 spot over the long term.