Where rides are not as high a priority, people will be “priced out” at a number much lower than at other parks. Pricing people out of a line skip system at WDW isn’t going to drive them into the standby lines; it’s more likely to have them choosing a different vacation spot. I know you don’t want to hear it, but WDW is qualitatively different from standard theme parks.
Disney needs people in its restaurants, water parks, resorts, shopping venues, etc.
Those people still want to go on rides without a prohibitive wait but they’re not going to pay Universal type prices to do it because there just aren’t enough rides to justify the cost.
And if Disney does decide to sell very expensive passes to people, those people may well decide to pound the rides more than they would otherwise just to get their money’s worth. How is that going to help anything?