Jump cues have done nothing to elevate the level of play. Jump cues have been around for 20 years. They have not been the magical saviour for the game. There are no big TV deals being signed by any major networks. It comes down to personal preference. Some people like them, some people don't.
The modern day jump cue has taken most of the skill necessary to make a jump shot, out of the jump shot. You couldn't use a dart stroke until the phenolic tipped jump cue was available for sale.
Chalk is necessary to the game. Rails are necessary to the game. Diamonds help with bank shots, not just kicks, so they are necessary. To argue that jump cues are as relevant to the game as the above items is a pretty weak argument, yet that's all that ends up coming back. Talk of maces, chalk and diamonds.
The top pros are asking for no jump cues. This isn't my opinion. Earl, Efren, Shane, Justin, etc. Not Shawn Armstrong, but top touring pros. They somehow believe that the game can continue to thrive without the jump cue.
The reason the jump cue will continue to be legal has nothing to do with the players or game's advancement, and has everything to do with commercial interests. Joss doesn't make a jump cue, and I find it interesting that their tour with Mike Zuglan has no jump cues allowed. Predator sponsors a lot of events. They make a decent amount of money from jump cues. They would lose revenues if jump cues were banned from the game. That isn't in a promoter's best interests, as they need the sponsorship money to run their tournaments, and cover their costs. First rule of business - don't bite the hand that feeds you. Companies like OB and Predator put money back into pool. To take a bite from a revenue stream that is already on life support is a bad business decision. And that's what the jump cue is - a business decision. It has nothing to do with advancing the game. Or drawing people into the game.