You meant argumentum ad hominem (advanced by a loaded question, even!). Technically, it's not relevant to startups' degree of ease whether you've been successful as a founder or not, but it is valid for me to ask you to cite your evidence.
You claim to be an expert on startups based on evidence you can't reveal. That's a circular appeal to authority (yourself) established by an appeal to a higher power (all your friends' top-secret successes).
I don't want to be (too much of) a pompous ass here, but I get jumpy when people try to convince me of things that are both improbable and highly desirable.