The demographics of Italian-American organized crime versus all the other ethnic organized crime are what they are; and the Italians cornered the market throughout the 20th century in a certain type of highly networked, operatically violent, schizopathic crime—affectionate family men who love a good plate of food, go to mass, are shrewd in running legit businesses to cover their crimes—but who cherish compulsive vices and commit casual atrocities on the side.
Jewish crime is more cerebral and intellectual; and there have always been fewer Jews in the U.S. than Italians, so those are reasons why their stereotypical crimes of creative financing, tax evasion, and money laundering just don't pack enough punchy cinematic appeal. As you noted, the movie business thrives on sensationalism.
Our FRiend above seems determined to play the victim because his Italian group is trashed; yet the English-descended outlaw Westerns and the Irish gangs and crooked cop movies (such as the dirty cop in The Godfather) have certainly gone before the Italian gangster movies, following in the same chronological order as the waves of immigration to the U.S.
Italian immigrants arrived en masse in conjunction with the rise of electricity and mass communications, which helped them become, as Bill O'Reilly's recent book says, an alternate government—powerful in every state, with international ties as well. Before telegraphs, telephones and television, their enormous clout wouldn't have been possible. The sheer number of Italian gangster movies the freeper above complains about are a testament to their transgressive success and also to the corruption of our English/Scots/Irish establishment that enabled and abetted the higher reaches of their corruption.
If the complainant doesn't like Italians portrayed as gangsters, wait a couple of years. TV is full of noble muslims right now, soon to be followed by noble latinx illegals along with the noble post-George Floyd black geniuses and paragons of moral virtue; so it's only a matter of time until we have noble Afghan refugees and nobly oppressed Chinese students rejected from the Ivy League—but eventually, Hollywood will make gangster movies about all these ethnicities. Italian crimnals are so last century.
The biggest thing he’s forgotten is that 99% of the people complaining about how demographic groups are represented aren’t in those groups. They’re liberal busy body WASPs being offended “on behalf” of those poor unfortunates. Oh sure, there’s always some ADL from the group, but most don’t care. Look at all the surveys of Native Americans about the sports team names, they give a crap, but those WASPs sure are upset about it. And it’s really the same with all these.
It is true things evolve. Most of the OC being depicted in modern times is Russians or Armenians. Part of that is because reality evolves. Italian OC isn’t that big anymore. Other groups have over taken them, they’ve lost their luster and power.