Combination of software availability and the perception that Linux is only for developers/servers and you have to be a computer genius to use it. Even if you can convince someone that just running Linux isn’t rocket science, there’s still commonly used software like the Adobe suite and MS Office that just don’t have feature-parity level alternatives, even if those alternatives are almost there. I can do most of the stuff I used to do at work on LibreOffice compared to MS Office, but not everything. And while compatibility with the MS Office file types has really improved leaps and bounds over time, there’s still some noticeable issues when opening those documents with one program after making changes with the other. People mention Photoshop a lot as a deal-breaker, but especially with GIMP 3.0 coming, GIMP will be a lot closer to Photoshop than most Linux PDF editors are to Acrobat. The only one I can find that has even close to Acrobat’s features is Master PDF Editor, a piece of paid software (if you want all those features without an annoying watermark) that I don’t think the free version of is in many repos. People say to use LibreOffice Draw, but that’s drawing software meant for entirely different file types and is really not good for any PDF with any type of formatting in it because Draw isn’t designed to handle it. I don’t need those features on my own home PC, so I’ve been running Linux on my personal machines since 2009, but for those who do need those things, it might be a hard sell.
Do you know if the major issue with QTWebEngine will be fixed so that KMail/Kontact and Falkon will work again?