I think regardless which questions you are talking about, in which aspect your are looking at it,you can always divide the world into 2.
And when it comes to people who want to live their passion, I can see of them: the Mark (Zuckerberg) and the Steve (Wozniak).
The Mark, aka the Visionaries, are people who have a true believe and want to impact the world. They might start developing product and love it, but what really passionate them is the change their product can bring. In the start-up world, we call them the husler. You have to talk to a lot of people, refine your idea, your vision, communicate a lot, spread the word. And you need to be your own leader. You will have mentors for sure, but you are making you own road. They will focus on spreading their vision.
The Steve, aka. the Builders, are truly passionate by the product, they love doing what they do but are not that interested in leading people, managing a team. Most of the time they think talking with people is a waste of time they could spend developing, improving their product. That is what they love doing. The Steve also will have mentor, but it will be more technical mentor, training them on the new technology. They also love community of builders like them. But given them the choice, they would not want to start their own company because they don’t want to waste time in administrative stuff, recruiting a team, doing marketing, fundraising. They would prefer to have someone else doing all that (a company or a co-founder) while they can focus on building.
iWeekend is for both Mark and Steve, you have to join the community and find your match.