She gets it. In the three and a half years that Pathfinder has been in print, they've released only 5 player-oriented splats.
Even a conservative count of player-oriented splats for 3.5 gives me a count of 23 books. If we further round that down and assume 20 is actually the limit for how many player-oriented splats a game can support before it collapses under diminishing returns, it'll still take Paizo another 9 years at their current pace.
Paizo appears to have found a business model that's very sustainable. The big question is whether or not WotC can find one, having spent the past decade floundering through the same burn-out
supplement treadmill strategy that proved itself to be a purely short-term solution in the '90s.