Is it possible you didn't actually have that much insight into what they do day to day? I'm currently running a small company (<10 people) and I was working as

Is it possible you didn't actually have that much insight into what they do day to day? I'm currently running a small company (<10 people) and I was working as a developer (including lead) for about 15 years before that & the skills required are indeed quite different. There's a lot more planning and decision making, the impact of your decisions are much greater, a lot more uncertainty and your people skills are a lot more important.