How was the "Cosa Nostra" created?

by Campanerut

Hi,after reading this article:https://www.google.com/amp/s/deadline.com/2021/11/sons-of-anarchy-kurt-sutter-western-series-the-abandons-netflix-rust-tragedy-evaluation-protocols-1234881494/amp/

I became interested in knowing the sicilian mafia origins. However,i'am have some difficulty in understanding it.By my research it was created after capitalism was introduced to Sicily, the state couldn't control violence,so the landowners contracted private armies,and these armies began to threat the landowners in exange of money. My questions are: 1-Why the state couldn't control the violence with the arrival of capitalism? 2-Who were the members of the private armies?Were they rich or poor? What social class they belonged to? 3-Why these private armies sudenly start to threart landowners? It was due to poverty or they were simple bad people?

And please,read the article, an writer for a new series for Netflix claims that the beggining of Cosa Nostra started because the peasants were badly treated by the landowners,i want to know if it is acurate,and if it is,how these peasants developed into the mafia.

Thanks!

Klesk_vs_Xaero

You might be interested in this post by /u/mikedash and the other linked post.

I hope you don't mind me saying, but I feel the screenwriter in question might have taken the word "protection" a bit too at-face-value.