Honestly at this point Disney is the only major holdout in the industry on not having some kind of paid skip the line pass outside of VIP tours (and the parks that have a paid skip pass still offer VIP tours as well). I don't get their logic behind why they just won't implement it already. You can't use the argument that it gives them a marketing edge by saying it's "free", because if there was no market for a paid version other parks wouldn't even offer it and clearly they're doing fine, and clearly they aren't great about marketing it as it is because it's so confusing for people who are new to WDW or theme parks in general.
I actually just used Cedar Point's equivalent system on Labor Day. The cost of it, plus the ticket was less than a 1-day at WDW and it was QUITE busy on Labor Day and I got to experience EVERYTHING I wanted to go on between 10am and 6:30pm and that was with ample breaks and meals in between. I would have gladly paid that much and more for the same self-paced experience at Disney. They are seriously losing out on some major cash.