i see where you are coming from, but i think you are only taking into account what Disney has done recently. Universal already has a paid for line skipping offering, that costs more than Disneys, they have both continued to raise pricing year over year. The real "difference" is in perks being cut back, or changed, (ie, early/after hours) my thought on this is that Disney wasn't having problems stuffing their Value, and Moderate hotel offerings, and they are making a concerted effort to fill their Deluxe. I do believe that a lot of the other changes were caused by Covid, and i do not foresee them being continued once things settle back down, (when that will be is anyone's guess at this point).
Bringing it back to another cell phone analogy, Disney is Verizon or AT&T, and Universal would be T-Mobile, I don't think many would think it worth Verizons time to offer better perks, because they already "own" a large customer base, T-mobile on the other hand should offer unlimited plans, ect., to better compete with the like of Verizon. People put Universal and Disney in the same weight class, but just in terms of revenue alone,(not to get too far into financials) Disney cleans up. I just think that at the end of the day, Disney can charge more, because they offer more, (even with scaling some things back) maybe someday that will change, only time will tell.