I'm willing to say owners can grow into the job.
Best examples might be Pats and the Caps. Kraft got involved in settling draft day disputes between Parcells and his player personnel guy, had a stop watch at Tebucky Jones's pre-draft work out, shot off his mouth about "press corners," and did not recognize Carroll was the guy who needed more authority. He only became smart when he hired Belichik, gave him some video equipment, and said, "it's all yours." As for the Caps, I don't think it was much of a love-fest for Leonsis until the past two or three years.
The Lerners looked like they were snowed a bit by Bowden that they could build cheap, and Kasten could only tell them you have to give me time to build a system. Hence, LAC. Now it seemes Rizzo and Kasten have convinced them that at some point, we have to try to be at least mediocre in order for our fans to be willing to wait for our player development system (rather than rush talent).