"Barriers to entry" refer - in relation with a given industry - to the very significant (but not truly unsurmontable) difficulties which another company outside this sector of activity would experience if it were to try to enter that Market. Barriers to entry can take the form of state regulations (E.g. license needed to operate), financial amounts at stake (E.g. to build nuclear power plants), Marketing & Market awareness drivers (E.g. Cost to build a brand from scratch), etc.

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