Why does it matter? I don't think entrepreneur implies startup. Someone who starts a restaurant and then a dry cleaner and then a hair salon is still a serial entrepreneur.
I actually find reading your stuff more interesting because you're not what I think of/have a stereotype of as an "entrepreneur" - or at least you don't come across that way in your writing. I get more of a "hacker done good" impression, which is something I can relate to a lot more than "business guy".
EDIT:saw speling mistakes