They will just face the same problems we solved decades ago and reinvent the mostly similar solution we also had decades ago.
In a few decades, they will reach to our current level, but then, rest of our world didn't idle for these decades and we don't need to solve the old problems.
In a few decades, they will reach to our current level, but then, rest of our world didn't idle for these decades and we don't need to solve the old problems.