Yeah, honestly the potency of DDI's tools is near the top, if not the top, cause leading to poorer sales performance (which, as someone pointed out, was not the only factor in our decision), and a general customer perception that using 3PP 4E products is more effort than it's worth.
Clearly we didn't have a big enough name, given the people in this thread who never heard of us, but clearly it was pretty hard to make a name (even with two Ennie nominations this past year!) in the 3PP 4E arena. Most folks seemed to look to the older guard (several stellar examples of which have been named in this thread) rather than poking around for the new guys like us. And with One Bad Egg being an as-available priority for us, we simply didn't have time to push it out there more. That said, I do think we did push it out there reasonably, within the limits of what could be afforded -- the sales, while they kept us from losing money on OBE, never yielded anything big in the way of profits, and profits are what you need if you're gonna spend money on marketing (which, yes, is a Catch-22; but marketing might net you nothing, so you have to treat money which you spend on it as just plain lost).
A footnote: I will point out that there's been almost no overlap in who's working on the Dresden Files RPG (on the Evil Hat side) and who's been working on the One Bad Egg material, aside from me. I purposely kept those teams separate. DF work's been chugging away, hardcore, the whole time.