Each will continue for at least the next 20-30 years or so.

Eventually? Depending upon the total manpower left, they could conceivable merge..... or not!

Even if the Colombo, Lucchese, Bonanno, have even 20-40 men each left. Thats still larger than the vast majority of other families ever had all over America, even at their 1950s peak!

So I really don't think they are going anywhere, anytime soon.

Now as far as quality? Lol....well, thats another conversation altogether.