The length of time it takes to reach a goal should always be compared to a similar process. With that in mind, do you know how long it takes to obtain US citizenship for a foreigner? It's an average of about four to thirteen years or longer. So when you ask yourself the question: how long does the process of obtaining Italian Dual Citizenship jure sanguinis (by right of blood) take? The answer is WAY LESS than thirteen years, in fact, in most cases, less than four.
Let's analyze the process step by step: