Sure, it's hard to predict exact timing on these sort of things, so another 5 years is a plausible timeline. It does tend to be easier to do things the second time around. When you're doing something from scratch then you don't know what the right approach will be, you're going to have false starts, and so on. When the general idea has been proven, it's much easier to replicate because now you know what the general direction to pursue is.