What's the appeal of investing in relatively small and little-known corporations? Though these businesses come with heightened risks, getting in on the ground floor can potentially be lucrative over the long run if they become successful. Just think: What if you had invested in a massively successful biotech giant like Vertex Pharmaceuticals in its early days?Let's look at two relatively small biotechs that, if enough goes right, could deliver outsize returns to those who invest now: Editas Medicine (EDIT - ...