When I read a question that gets into what or is not a "true entrepreneur" all I can think of is:

http://en.wikipedia.org/wiki/No_true_Scotsman

which suggests to me that debating over labels like "true entrepreneur" (or not) or "serial entrepreneur" (or not) is a waste of time.

The same discussion also smacks of a sort of elitism that I associate with the idiots to run around talking about what metal bands are or aren't "tr00 kvlt". None of this strikes me as very productive.