Be highly unified, which eases software distribution. With Windows, the system software at least is from a single vendor. You'll have differences in hardware and in versions of Windows, sure. But then compare that to Linux, where Wikipedia estimates a thousand different distros. Granted, a lot of those are member of families like Red Hat or Debian that can be supported relatively easily. However, others use more exotic setups like Alpine, NixOS, or Gentoo. Projects like Flatpak are working on distribution mechanisms, but they have their own issues. And even if you get it running, that doesn't mean it integrates well into the desktop itself. Wayland should improve that situation, though.

Reinstall Candy Crush.

1. Power management on certain chips is simply better than anything Linux has to offer (AMD Zen+ mobile for instance)
2. Modular driver architecture with drivers that aren't complete jank to manage and install. A lot of people see this as a pain point, but in reality it's not such a bad thing, especially nowadays.
3. This is a given, but as lots of stuff runs on Windows (namely older games), you can only really make stuff for Windows on Windows. So if you need to develop Win32 software, you really have to use Visual Studio for proper development. Mingw cross compile exists, I know, but that's never going to be as good.

Number 3 is keeping me on Windows. I make mods for old games and I need Visual C++. I almost got the compiler to run under Wine but who knows how it would behave if it did run.

Play games on GeForce NOW at a higher resolution than 1080p. :-/

Nowadays I'd say driver discovery for virtually any modern hardware you might plug into your computer. You don't even need to visit websites to download installers anymore. Literally plug it in and it will grab whatever is needed for it to work properly. Yes even Nvidia display driver. Even VR headset.

Never had any issues with multi-monitor setups out of the box either. It just works.

I'd also mention disposable Sandbox and virtualization in general. WSL also runs at native speeds.

Play Netflix, etc at 4K.

i tried producing music with linux native daw and plugins via yabridge. pain in my stupid ass.

Linux lacks GUI configuration tools for many things, you have to edit text files often using guidance for obsolete versions of software and hope it works. Every single config file can have thousands of lines and if you wrote something wrong it will crash or start acting weirdly, very fragile design. GUI config tools mostly allow valid inputs like checkbox true/false and complain if the path isn't valid.

Edit: to clarify, i'm exclusively using linux since 2008 and i'm not 'afraid of editing config files', downvoting me doesn't fix the problem. I'm also not fond of fixing your header files for them to compile.

Double click to install a program

Use the map editor for C&C Generals

Oh look, another command & conquer comment from me. How surprising.

Full screen "please wait while we get your system ready for you" narrated by Cortana, and if you disable Cortana you still have to wait the amount of time it takes for the audio to complete. Like an invoiced video game narrator with unskippable lines.