First who actually turns up to WDW without tickets already being purchased? WDW isn't some roadside park where people spur of the moment just decide to stop in and think about buying a ticket on a random Saturday morning.
Second, if you really can't understand online ordering of different options with differing pricing, its time to take your AARP card and head off to play some canasta or something. We aren't talking multivariable calculus here.
And third, do you see days where there are tons of LL's not being bought? When you are the back, assuming your still going and not just complaining on a MB about a place you don't go to, do you see LL lines that are empty bc people aren't buying and using them? It's not me saying so, is the consumer actually buying the product that shows people want it, or find value in it.