Indeed. The people that most need this advice simply won't take it.

The three most dangerous sentences in the world

  "That might work great for other companies, but..."

  "That's how we've always done it."

  "Unfortunately it's not that simple."

Also this storify from patio11 is /very/ relevant.

https://storify.com/dgempesaw/sales-vs-hiring-via-patio11