Bachu raises a really valid point here. Looking at current market share is only part of the picture. If it weren't for Adobe only supporting OSX/Windows and Adobe being such an integral part of my workflow, I would have been on Linux a long time ago.
The balance is shifting though. People are becoming increasingly dissatisfied with big tech and they're looking for alternatives. It's precisely the reason people jump to Affinity. It's not an easy thing to buck the trend in a market so completely dominated by Adobe, but users of Affinity products are doing just that.
My workstation is Linux (Arch/Endeavour OS). I have been able to migrate my creative and development workflow to this system, through a process of gradually exchanging the Adobe products I require with alternatives under Windows, such as Davinci Resolve, then finally making the OS transition to Linux.
The only thing yet accounted for is Affinity Photo. It's the only reason I have VirtualBox installed running Windows. Performance is not ideal and it doesn't detect my video card so there's no GPU acceleration. Affinity Photo is officially on my seeking a Linux capable alternative list.