Marketing is a form of execution. Those who execute it better have an advantage.
And hiring all the idea people in the world is just going to make you that much poorer if you never do anything with them.
Jesus christ. You really think everyone in a firm is able to execute their ideas? What the fuck would be the point. Do you think every coder/designer is an ideas man/woman?
Not necessarily, but I know there's more of them and they're compensated better than the "idea guys."
In addition, the best executions have come from those who are.
What was Bill Gates/Microsoft's big innovation? What made them the most successful company in the world in a such a short time?
Well, their first success came from swindling IBM into using their nonexistent-at-the-time OS. But what made them the most money was Windows.
Did they invent WIMP? No. They took it from Apple, and
they didn't even invent it. Thank Xerox for that.
Was the iPhone the first smartphone? I can go on.