Advantage 1: You are the boss, you call the shots.
Advantage 2: You have your say in all you do.
Advantage 3: You define your boundaries and push them too.
Advantage 4: Your profits are all yours.
Disadvantage 1: You have no shared knowledge from industry veterans.
Disadvantage 2: Decision-making is a one-sided affair, which could possible backfire.
Disadvantage 3: In testing times, there is nobody to share the burden.
Disadvantage 4: Entering new markets and exploring new products could be an arduous task.