1) I thought I could hire "head of sales" that would run the /department/ not need extensive hand holding, and worse, I did it more than once - went through several vp of sales. Of course they interview well, they are sales people. There has to be "verify" and really understand what is going on
2) The skills to get a product off the ground are very different than scaling a business; people have written about the "3 ceo's" but I think there is a similarity with technical founders; I had multiple co-founders but few stuck it out until the end, in retrospect they were needed at a given phase, not the whole time