All or nothing hiring is too risky. Gradual formality makes the selection from both sides cooler, you know. We don't do interviews either; hazing sure, but no stupid hypothetical questions to test loyalty. There is no loyalty. Greed is good. =)
There is the another option. Make something people want and build it up slowly, on the side. If you do, you may free yourself from being at the beckon call of other masters (other than users). Others have, so it's possible. We are each masters of our own fate.
Peace.
I cringe whenever I read job ads that are aiming for a culture fit: "we only want to hire harmonious, independent, extroverted employees;" when in my experience, the best employees do not hold strongly to those ideals, but neither to do they hangout at the other extremes.