Lightroom, and GotomyPC are two examples of why I can't switch. Yes, there's a lightroom competitor called dark table, but if I wanted to switch, I would have done so on windows. As much as I hate subscriptions, I'm seemingly pretty entrenched with LR.
Gotomypc is the biggest show stopper, its how I access my work computer and no other remote app is permitted through the firewall.
It may be unfair, but I feel much of the open source offerings are not up to par. Some start out great, and provide great features, but then the developer or teams get bored or move on and updates slow. There's exceptions to be sure, darktable is a good example of open source done right. I also find some open source apsps may not work well with your distro, or requiring tweaks, or not looking polished.
There seems to be a desire to avoid commercial applications on the linux platform, the culture of Linux expects software to be free and I think that can scare viable developers.
I've been out of the loop with Linux for a little while, and perhaps my perspective is stale, but the last time I installed pop!os, I was unable to get gotomypc working and that was a show stopper for me. I'd love to dual boot my laptop but until Citrix supports linux (they are the makers of gotomypc), I'm SOL