Most engineers, by nature and by training, have the very skill set that it takes to “sell” in a highly evolved manner (critical in the big-ticket infrastructure environment) – although many don’t see this.
Ironically, they’re often pushed out of this very productive comfort zone by misguided notions that they must deliver a “pitch”: some artificially passionate, one-way delivery of their company’s (usually generic) strengths and (usually un-researched) competitive advantages.