They're just not fast anymore. Riders get their pick of wheels from a sponsor. FWD and Princeton still make them but their riders aren't testing faster with them. You only occasionally see riders using Giants that test faster with Pro wheels.
This (454 NSW) is just a training wheels 💀 3,500 euros for the set. I wonder if the Radar is faster or slower 🤔 It seems to be undoing what the aero seat post does. Also, why haven't TTs switched to Classified rear hub instead since they can change gear at much higher watts, other than it helping with aerodynamics of front chainring 🤔