I think most of the guys that made real money informed. How else do you survive in that world? You have to use law enforcement to your advantage. Lucky Luciano ratted on rival drug dealers. The founder of the mob as we know it. Look at what Gambino and Lucchese did to Genovese.
Luciano only gave up his own heroin whereabouts, the never gave up anyone. Gambino and Lucchesse are not the ones who set up Genovese, the FBN did by going to jails and asking anyone with a drug charge to work with them, they got a Spanish man named Cantelopes to say he worked with Genovese. Most bosses wound up in prison, Gambino was constantly harassed by the feds.
