The ability to outreach does matter, to search for support and advice and be smart enough to accept them.
It's not about you. You are not your project. Your business model is not you either. And definitely the university grades have not yet defined anyone. You are not your grades.
When you are detached of all this it's much easier to look for allies, to find partners.
Stop thinking of yourself as the biggest guy in a room. Start it low and cooperate. And starve your pride. Don't let it push you into lowliness.