It should be no surprise that a business with 100 employees has different management challenges than a business with 10 employees. At some point, managing the business becomes less about the idea that founded the business -- creating something that people like and want, product market fit, etc -- and more about solving the logistical challenges of scaling that business to grow. As Mark and Jesse discuss, those are two different skillsets, and few people excel at both. Understanding your strengths and weaknesses and building the right team around you can make a huge difference.