The Voice Margin Cliff: Why Call Handling Decides Agency Retainer Durability

Voice agents are the first AI category where an agency can attach a hard number to a client's lost revenue: unanswered calls, after-hours gaps, and slow follow-up are countable in the phone system before any deployment starts. That makes the category sellable on recovered bookings rather than on novelty, and it makes the labor left after deployment the real pricing variable. Agencies that quote before they have call samples and escalation rules are pricing blind.