Translate the following English sentence to French:
"There are some areas of Europe - including certain areas of Italy, for example - where a very successful company has a substantial, decisive, unambiguous influence on the market, which almost amounts to a monopoly."
Il est des régions en Europe, certaines régions de mon pays, par exemple, où une entreprise puissante conditionne le marché de façon significative, décisive, univoque, je dirais, presque monopolistique.