Mafia reputation operates as a shared trademark guaranteeing protection quality.

Evidence

Mafia families share a common asset of reputation, equivalent to a trademark: a guarantee of high-quality protection and effective intimidation. This reputation is distinct from that of each individual family or member, but each gains from it, and each has an interest in maintaining its distinctive features. The same action undertaken by a protection group which cannot successfully claim to be a recognized part of the mafia is less effective and more costly to implement. — Diego Gambetta, The Sicilian Mafia The Business of…, 653

Categorization

• XREF: The trademark/reputation-as-shared-asset framing matches the diamond industry’s use of DeBeers sight-holder status as bankable credit signaling and cartel monitoring substituting for institutional trust.
• ADDENDUM: The trademark analogy parallels ‘Grafting & Growth’ in treating a name/reputation as an infrastructure asset that individual actors draw on and must maintain — the family trademark as shared grafted rootstock.