Please look again at your original post. This whole business about "at one point in their life" simply isn't there. You didn't say those words. Just the opposite: in one of the later paragraphs, you talk about people "who lived and died in dire poverty". You seem to be moving the goalposts of the argument. Either that or your first post was very unclear.

> in Einstein's and Wittgenstein's case, during significant portions of their lives, though Einstein was certainly vastly more successful than any of the others during his lifetime

No, see, you're doing it again. Wittgenstein was regarded from early in his life as a genius. He was considered a very eccentric genius (that's putting it mildly), but in his own lifetime he was successful and well regarded. If anything, he held lower status jobs because he chose to run away from the world of fame and regard that he already had.[1]

[1] http://en.wikipedia.org/wiki/Ludwig_Wittgenstein#Teaching_po...