It's not so simple.
How did both the Classic Cowboys and present Patriots produce over 16 consecutive winning seasons while their draft position was always in the bottom third of the league each and every one of those seasons?
The answer is that they had a system or formula for acquiring talent. They had a plan. They both knew what they wanted to be and acquired the talent applicable to their philosophy. They had methods of increasing their ability to get more value than their drafts represented. The Cowboys were the first to grade each player and use a computer to compile a score. The Patriots constantly traded for future picks and were very businesslike in their evaluation of veterans and their productivity in comparison to their salaries.
The Cowboys used a method of acquiring players with certain traits that they believed would form a more cohesive team. They drafted the "right kind of players" that were smart, productive in college, good citizens, former captains, guys who loved the game and worked hard.
We got Elliott because of a higher draft position but the other MVP candidate, Dak Prescott, was a compensation pick in the 4th round. That had nothing to do with league parity measures like draft position and salary caps. We have a 6th round CB that plays better than a great number of #1 picks at that position.
And how different would it be if you replace Elliott with Murray right now, based on their current productivity. Chances are, if the Cowboys had kept Murray then they would never have been 4-12, perhaps Romo doesn't even get hurt. That wouldn't change the Cowboys getting Prescott, as far as draft position is concerned. It would just be Murray instead of Elliott.
Now, this is just an example that it's not all about record and draft position, I hope nobody believed that I think the results would be the same, what we are seeing now is a special bond that is forming among players which would not be the same without Zeke. Nor would the Cowboys future at the position be the same.