Universal has three parks that offer a product for skip the line access. While one is a water park, even that has an “all attractions” express pass option that is at $109.99 (looking at same day pricing). People pay it. There’s demand-based pricing for their product.
Not all, but those that want the convenience of skipping the lines, most certainly will. A guest may not purchase it at all four parks, some may purchase it at one or a few, and others won’t purchase it at all.
People have proven time and time again that they’ll/we’ll pay for convenience. Aside from the other parks skip the line products, other products/services that prove this are Instacart, DoorDash, toll roads, TSA Precheck, Clear, and the list goes on and on.