Originally Posted by
velopig
12 of the stages in the 2020TdF were won on discs and 9 on rim brakes. A majority of the Pro Tour teams are running discs so the transition is underway.
Yep, that was all the teams that didn't have GC contenders. All the GC contenders were on rim brakes for any of the critical stages. It's happening, but it'll still be a few years. For the other teams, if you have to wait five minutes for a team car, that's fine, you're just finishing with the groupetto.