Couriers and other delivery services too.lots of examples, including ISPs, where speed is a service you pay a premium for rather than is foisted on you
Commercial flights is an interesting one. You can pay to board earlier, sit closer to the exit, and get through security faster but you can't, of course, make the plane go any faster (even the fast security line can't really save you that much time). I don't know anything about planes, but I don't think they're getting any faster (?) and the Concorde was discontinued decades ago