A big one for me is Microsoft office (desktop), Libreoffice and other FOSS alternatives just simply don’t come close, and feature wise are 20 years behind. Especially since I basically mastered MS office 2007+'s drawing features, which the FOSS alternatives don’t replicate very well.
And of course Microsoft loves to push Office 365. I don’t pay for that and just use desktop office, but Microsoft prefers you don’t know that you can do this.
And I’m going to get shit on by Lemmy big time for this but while Linux is great and has made vast improvements in recent years, I still use Windows, not only because of MS office, but because a lot of games tend to only support Windows. I know that wine and proton exist but they’re not perfect and don’t feel quite the same as running native.
I wish an operating system existed with a hybridized Linux and clone NT kernel (using code from FOSS Wine and ReactOS of course) so that the numerous back catalog of NT software can run similar to as intended while also interacting with Linux programs better and using a shared environment. Since it would probably become vulnerable to viruses for windows as well, maybe? (my programming knowledge is extremely rusty) an antivirus similar to Windows defender is bundled with the operating system. Hopefully if someone makes such an operating system it can be a Windows killer and would switch immediately
I made the jump recently, and although there are clear issues, I don’t see any reason to use windows as my primary gaming OS anymore. Some games still require some fiddling with proton versions, extra command line arguments, environment variables, etc. That is bad for the average user that just wants to click play and play. Also, I noticed that at least on my setup (alienware laptop with nvidia gpu), some games have clear performance issues compared to windows, mainly some UE games. But it’s not so bad to make me want to boot windows again.
And just some extra two cents: I’m still keeping a windows partition for those games that simply cannot run on linux, and it’s possible to keep your main library on the linux partition (I’m using btreefs) and use that same library on windows. You just have to install a driver on windows, and it works beautifully. Haven’t had any issues so far.