Good point. The old days of the RICO trial with multiple murders, wire taps and a capo with testifies seems to be fading. Now it's more like the Bonanno bust with Nicky Mouth. Skinny Joey Merlino's attorney has called it "Racketeering Lite."

Probably limited FBI resources. Also these guys aren't leaving bodies as much. And my final guess is the Feds have been beaten several times or had mixed verdicts like Tommy Shots case and when Vinnie Asaro was acquitted. When they bring a case, they know it's gotta be solid.