Jerry was spoiled by Troy Aikman, and the Cowboys spent the subsequent years trying to get lucky with quarterback dice rolls — so when Tony Romo had some success, they were skittish about making a change and have been since.
They are risk averse, the antithesis of what Jerry is as a businessman. With a real GM, the Cowboys could rebuild the elite franchise they had through the '70s and '80s. But Jerry isn't going anywhere, and he'll continue to chase the success he had in his first years of ownership.
Jones can make it work
Jerry Jones may not be the NFL executive of the year, but he isn't anybody's idiot. He made a fortune drilling for natural gas, and now is one of the richest men in the world. He has turned the Cowboys into the most valuable property in American sports.
Under Jones' watch, the Cowboys found Tony Romo as an undrafted free agent. They chose DeMarcus Ware with the 11th pick in the draft. He had the foresight to hire Jimmy Johnson. He subjugated his ego when he named Bill Parcells head coach. And he built the stadium that is the envy of every team in the NFL.
He is a smart enough businessman to make things work, even if they aren't working very well at the moment.