Universal gives you 3 choices; regular line, express line and vip tours.
Limiting Express Pass sales, charging $$$, is fair to guest who don't want to pay extra. A less expensive FP, genie wish or whatever would cause a park to sell more passes to make the same revenue. Guests who don't pay to play might wind up lines that are way too long. Universal typically doesn't offer Express Lines the first few years. You can generally rush at rope drop. Sometimes close to park closing works. Hagrids will frequently go to VQ.