I’d also bet that a huge portion of those offices rely on at least some kind of proprietary software that doesn’t play nice/officially support Linux. MS Office, for example, or Autodesk’s stuff. When I saw what a headache it would be to get these working on Linux, I just shrugged and decided I’d keep my dual boot available for when I inevitably have need.
You’re turning up the cost dial for every additional workaround or adjustment you ask of people. Just to save what is fundamentally seen as $50-200 up front cost on a system for a new Windows 11 Pro license.
This is a big part of why I dislike consolidating downloading and viewing.
I’ve been using PerfectViewer on a tablet for viewing for ages. I’m sure there’s a better one and would be game for recommendations, but I am very used to this app and its quirks.
There exist any number of ways to download and sync the chapters to my device. I currently mostly use the mangadex-dl script and a syncthings folder and it’s no trouble. And all my read chapters I can just move into an archive drive where I’ll have them if anything ever happens.
This is standard practice with media. You use something like MPV for viewing and the downloading is handled elsewhere.