I doubt it even gets considered, but this is an excellent point. The league could do several things to reduce this type of tackle without creating additional penalties for the defense....which is in my opinion more penalties + less defense is not a good recipe for the league in its current state. Even something like changing where officials spot the ball by making it have to do with where the runners feet are instead of the ball could work. This has a significant ripple effect that has a significant impact on how the game is played (not all in a good way), but it diminishes the need of a defender to do certain tackles that pull their weight back and makes it easier for defenders to naturally follow through with forward momentum to stop a runner.
While I don't really love that idea in full I am tired of the league just saying "lets outlaw it and make this a 15 yard penalty" instead of coming up with better solutions.