Also, comparing any alternatives to Universal or really any other theme park is not possible. First of all, there isn't even a single season pass out there that can compare to the
ticket prices of one week at Disney. Secondly, for any other theme park including Universal, adding an unlimited jump the line pass allows you to essentially experience all top attractions in a day if you really wanted to. Booking a Universal deluxe hotel for $400/night gives it to you for 2 days in which case you can really experience the whole park as fully as you want. At a minimum, someone trying to achieve that at Disney would have to purchase 4 days worth of jump the line passes. The costs would simply be astronomical to justify it. Some might say it would only hold value at certain parks, primarily MK, but then you are back to the simple fact that if everyone is getting it for one park, it loses all value in longer lines regardless.
I think people aren't fully embracing how valuable the park reservation system may play out to be for Disney compared to FP+. They can control crowd levels and better staff parks knowing almost exactly how many people will be there on any given day, often well in advance. Having to commit to a park helps spread out crowds to less popular parks like Epcot and provides more value to upsell products like Park Hopper when people can't get into the parks they want. It forces people to commit to a Disney trip well in advance in order to secure the days at the parks they want, and creates an inflated desire for people to get a coveted park and/or upsell products down the road (like party tickets).