Without any data except watching countless youtube videos, the only place I see racks is for big stadium acts (U2 and the like) where it's a huge production and a lot of different tones need to be changed out. But by and large, I otherwise see a ton of pedal rigs for even well-known professionals, indie bands, and of course non-pros.

We're probably right now at a high point of pedal usage and new releases, thanks to super-engaging YouTubers like That Pedal Show, Andertons, Andy Martin, J Leonard J, Pete Thorn, and the list just goes on.