Fred Wilson makes it clear, at the beginning of a startup, it’s not about managing. It’s about building:

Building product is not about having a large team to manage. It is about having a small team with the right people on it. You need product, design, and software engineering skills on the team. And you need to be focused, committed, and driven. Management at this point is all about small team dynamics; everyone on board, working together, and getting stuff done. Strong individual contributors are key in this stage. Management skills are not a requirement. In fact they may even be a hindrance.