I predict the mafia will make a comeback. As leftists make cities ungovernable, people will seek protection for their livelihoods elsewhere. Unfortunately, next time it won't be Catholic Italians, like in the movies.
Generally speaking however, you did get the protection you paid for. If anybody vandalized your business or stole from you while you were making your "monthly payments", chances are that the mob would do something about it fairly quickly. Perpetrator's legs would get broken and they probably would never be seen again in that neighborhood.