With recruiting, I agree with that, but them gaining power I don't see it. Raab may be confusing alliances, such as Palermo, CDG, Villabate, Argentino, and Messina, just name the Sicilian clans forming alliance with Bonanno, Colombo, and Gambino families.
Genovese and Lucchese families have maintained connections with those on mainland Italy, not just one region.
For the recorded, the Ndrangheta is the strongest Italian criminal organization in the world, may be the most powerful in the world.