With 22 years heading up an independent agency under his belt, DiMassimo Goldstein's Mark DiMassimo believes traditional advertising's days are numbered. Of course, he would say that. A long-ago JWT creative who logged years at holding companies, DiMassimo says he saw the light when he realized agencies fundamentally failed to meet clients needs. Proud to never have been to Cannes over the span of his entire career, DiMassimo discusses using advertising to fight the opioid epidemic and why, for the first time in his life, he finds himself agreeing with Martin Sorrell.