A man who says that no patriot should attack the war until it is over... is saying no good son should warn his mother of a cliff until she has fallen. ↗
Directors are the captains of the ship, and it's your job as the lead actor to make sure that the rest of the cast understand that by doing whatever he says. ↗
The most annoying and full-of-crap thing a writer says is, 'I write only for myself, I don't care if anyone reads it.' A writer without a reader doesn't exist. ↗
So my answer is, YES, everyone can find a hedgehog concept. If these companies can do it, anyone can do it. And anybody who says they can't is simply whining. ↗