I found it interesting that one Paris-Roubaix bike tech review made mention that some bikes were set up with 40cm wide bars... No idea if this is a unique race specific prep thing or wide is no longer "the thing".

I recently started building a bike almost replicating my first road bike, of which I kept the original bars, 36 cm ctc!
3ttt Grand Prix bend, the bike they came off of was 59 cm, the bike they are destined for is a 56.
I will build it up just to see, almost everything I ride has 40 cm ctc bars.