At what point would you go "in house"?

[ManPuppy]

A thread from a few months ago (which I have somehow lost track of) was discussing, in uncharacteristically plain and business-like fashion, whether paysites were worth starting for a new venture in the current climate. Someone said, if you're generating traffic and have the experience and means to generate more, it eventually makes sense to produce your own content and paysite.

Obviously, the quality/source of that traffic is the biggest variable. But in general terms, what would that breaking point be for you? And if you were moving from Traffic Generator to Content Provider starting today, would you follow the standard business model (trial offers, regularly released fresh content, monthly rebills), or experiment with something different?