It's not as if they marketed it intensely, or provided a ton of support for it, either.
Granted, I understand, they're a significantly smaller publisher than WotC or Paizo, but look at the support Spycraft got.
I've never seen a FantasyCraft print product in the wild, and on one single occasion, a Spycraft 2.0 book.
When 3E/3.5 was in its prime, I saw Spycraft and Shadowforce Archer stuff all over the place.