By Dashni Vilakazi, Managing Director, The MediaShop The City of Johannesburg's crackdown on illegal billboards isn't really a story about municipal compliance. It's a stress test for the credibility of South Africa's out-of-home industry and a reminder that trust, not inventory, is what advertisers are actually buying.When major brands appear on non-compliant structures, it exposes a structural vulnerability. The entire OOH model runs on the assumption that what's sold is legally sound.A few things worth sitting with:The perception of risk moves fast. Advertisers don't need widespread non-compliance to retract and move cautiously as this is enough to slow investment decisions across an otherwise high-performing medium.Transparency is the new differentiator. Media owners who can prove airtight documentation and approvals aren't just avoiding risk anymore they're building a competitive edge in a market where trust is becoming scarce.This is a value-chain issue, not a single-party one. Agencies, advertisers, media owners and municipalities all have skin in this game, which means the fix has to be collective for us all. Not delegated?The real opportunity here isn't damage control it's leadership from everyone in the value chain. We need to move fast to formalise compliance assurance, push for industry-wide documentation standards, and treat transparency as a baseline rather than a selling point will be the ones advertisers trust with growing budgets.OOH has spent years proving its effectiveness and earning its seat at the strategic table. Protecting that position now matters more than any single campaign placement because trust, once spent, is far more expensive to rebuild than it ever was to maintain.